Role

We are looking for a Sr. Network and Infrastructure Engineer to join our Cloud Ops - Network Engineering department in a fully remote capacity in the Netherlands, reporting to the Manager, Network Engineering.

This position involves a mix of infrastructure, project management, and network engineering responsibilities. You will drive the design, implementation, and operation of complex network architectures, leading large-scale data center builds and expansions from start to finish with a strong sense of urgency.

What you’ll do (Role Expectations)

• Plan, implement, document, and manage data center cabinet layouts and power density to ensure maximum efficiency and reliability
• Oversee server capacity deployments, integrating infrastructure with automation to support global scalability and optimized resource utilization
• Collaborate with project management and engineering development teams to align on service requirements and hardware integration
• Work across functional teams to ensure the seamless synchronization of hardware, software, and network resources
• Provide expert technical guidance and troubleshooting support for complex data center infrastructure-related issues. This position will have to participate in on-call rotation in weekends and holidays.

Who You Are (Success Profile)

• You thrive in ambiguity. You're comfortable building the path as you walk it and see dynamic environments as the raw material to build something meaningful.
• You act like an owner. Your passion for the mission fuels your bias for action and you navigate seamlessly between high-level strategy and hands-on execution.
• You are a problem-solver. You seek out challenges because you are energized by finding solutions, knowing that solving the hard problems delivers the biggest impact.
• You are a high-trust collaborator. You are ambitious for the team, not just yourself, embracing a challenge culture where candor is delivered with clarity and respect.
• You operate with urgency. You have a relentless focus on execution and a bias for action, delivering high-impact results quickly to win for the customer and the team.

What We’re Looking for (Minimum Qualifications)

• Professional experience in remote data center operations, including device configuration and debugging fiber and patching issues
• 2-5 years of experience working with high-speed networks ranging from 10G to 100G and beyond
• Hands-on experience in BGP routing operations and troubleshooting for both IPv4 and IPv6 in large-scale environments
• Proven organizational skills with experience managing complex priorities within problem ticketing and inventory systems
• Bachelor’s Degree in Engineering or equivalent professional experience

What Will Make You Stand Out (Preferred Qualifications)

• Experience with Linux/Unix environments and proficiency in writing Unix shell scripts
• Technical knowledge of DNS, HTTPS, GRE, and IPsec protocols with practical troubleshooting experience
• Ability to automate end-to-end deployments at scale to drive operational efficiency

#LI-REMOTE

#LI-MM8

Role

We are looking for a Staff Data Center Operations Engineer to join our Network Infrastructure department on-site near Schipol Airport, Amsterdam, reporting to the Datacenter Deployment Manager.

In this position, you will play a critical role in expanding Zscaler’s global cloud by utilizing automation to provision hardware that will be deployed to our data centers.

What you’ll do (Role Expectations)

• Provision new hardware and network devices in a staging environment that will be deployed globally to expand and supplement the Zscaler network
• Troubleshoot issues within our build environment and repair or replace server and network components and infrastructure
• Collaborate with the maintenance, network, install and platform engineering teams to execute and validate build activities and assist in optimizing processes

Who You Are (Success Profile)

• You are a positive force. You approach hard problems with constructive energy and a 'can-do' spirit that is contagious, inspiring your team to stay focused on the solution.
• You operate with urgency. You understand that in a high-growth environment, speed and quality are not mutually exclusive. You have a relentless focus on execution and a bias for action, delivering high-impact results quickly to win for the customer and the team.
• You are driven by innovation. You have a deep curiosity for how things work and are energized by solving complex technical challenges. You believe in the power of technology to accelerate transformation and are always looking for a better, more secure, and scalable way.
• You champion simplicity. You are skilled at distilling complex problems, user needs, and technical concepts into clear, simple, and actionable plans. You are a precise communicator who brings clarity and focus to every interaction.
• You are resilient and adaptable. You view change as an opportunity and setbacks as temporary. You maintain composure and focus in high-pressure situations, guiding yourself and your team through complexity with a steady, positive hand.

What We’re Looking for (Minimum Qualifications)

• Experience working in Data Center or hardware build and development environments
• Deep understanding of various types of servers, network devices and configurations, and physical connectivity
• Proficiency with the LINUX/UNIX command line, BIOS, and OOB management tools such as ILO, SAA, iDRAC, or IPMI

What Will Make You Stand Out (Preferred Qualifications)

• Basic scripting capabilities in BASH or Python
• Familiarity with build automation technologies such as Ansible or PXE boot
• Experience with Jira, Confluence, or other ticketing and documentation tools

#LI-MM8

#LI-ONSITE

Your future role within QRT:

We are hiring a Senior Low-Latency Software Engineer to join a newly formed team building a high-performance trading platform from scratch.

This platform sits at the heart of QRT’s execution capabilities and is designed for ultra-low-latency, high-frequency trading. You will work on systems where performance is critical, contributing directly to how strategies are executed in live markets.

You will collaborate closely with quant researchers and traders to turn models into efficient, production-grade systems, while shaping the architecture and performance of the platform using modern C++ (C++23).

Responsibilities:

• Design, build, and optimize greenfield, high-performance distributed trading systems in C++, with a strong focus on latency, scalability, and reliability
• Partner closely with quant researchers and trading teams to translate strategies into production systems and contribute to the overall architecture

Your present skillset:

• 5+ years of experience in low-latency / high-performance C++ development
• Strong expertise in modern C++ (C++17/20/23) and systems programming
• Experience with multithreading, concurrency, and real-time systems
• Solid understanding of Linux systems and low-level performance optimization

Nice to have:

• Experience in electronic trading systems (market data, execution, or connectivity)
• Understanding of market microstructure
• Knowledge of networking (TCP/UDP) and system-level performance tuning
• Exposure to hardware acceleration (e.g. FPGA)
• Experience with Python for tooling or prototyping

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology and trading expertise has shaped QRT’s collaborative mindset which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors.

QRT's High-Frequency Trading team designs and operates ultra-low-latency systems that run at global scale. We’re looking for experienced C++ engineers who care deeply about performance, efficiency, and the elegance of ultra-optimized systems.

Your future role at QRT:

You’ll work across our latency-critical stack - from kernel-level tuning and network optimization to highly efficient C++ components. This role involves close collaboration with our FPGA engineering team as well as our hardware and infrastructure engineers to design end-to-end architectures where every single nanosecond counts.

• Design and optimize C++ systems for trading, market data, and infrastructure
• Profile and fine-tune performance across CPU, cache, and memory layers
• Collaborate with FPGA engineers to integrate hardware and software pathways

Your present skillset:

• 3+ years of experience in performance-critical C++ (C++17 or newer)
• Strong grasp of systems programming, low-level understanding including memory management and CPU's architectures
• Deep familiarity with Linux internals, kernel parameters, and low-level profiling
• Curiosity about hardware, networking, and how systems behave under real load

QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees to achieve a healthy work-life balance. 

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology and trading expertise has shaped QRT’s collaborative mindset which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors. 

Your future role within QRT:

We are seeking a Market Microstructure Researcher to help optimize exchange connectivity and interaction for our high-frequency trading strategies. You will analyse network and exchange protocols, automate performance metrics, and lead experiments to improve our trading operations, with a focus on latency-sensitive exchanges.

• Network & Protocol Analysis: Analyse network and exchange protocol captures to identify inefficiencies and improve communication performance
• Exchange Research & Liaison: Research exchange features, attend presentations, and communicate with exchange counterparts to gather insights
• Execution Optimization: Reverse-engineer trading systems and design and conduct experiments to improve fill rates
• Cross-team Communication: Collaborate directly with trading and research teams to ensure best application of findings and direct PnL impact
• Data Analysis: Effectively work with large and robust datasets to identify and resolve inefficiencies in internal execution systems and exchange communication

Your present skillset:

• Degree in Computer Science, Engineering, or a related field
• 5+ years of experience in data analysis and/or low-level systems and network engineering
• Strong skills in Python and time-series analysis
• Understanding of network protocols such as TCP/IP and Ethernet
• Familiarity with market microstructure and low-latency trading is a plus
• Advanced networking and GNU/Linux knowledge is a plus

QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance. 

The Role

Nebius is looking for a Senior Software Engineer to join the Hardware Infrastructure Observability team. You're welcome to work from our office in Amsterdam. We build and run low-level monitoring for servers and data center engineering systems to ensure reliability at scale. We also design and operate maintenance and remediation systems that enable safe, predictable fleet-wide changes and keep the infrastructure healthy.

Key Responsibilities:

• Design and develop services and agents that provide deep visibility into a large server fleet and DC engineering systems
• Evolve our metrics/aggregation/alerting pipelines and improve signals quality
• Build maintenance workflows and automation that keep fleets healthy
• Investigate incidents hands-on (including on-host debugging) and drive root-cause fixes
• Collaborate with hardware, networking, and DC operations to improve reliability
  

We expect you to have:

• 5+ years of professional software engineering experience
• Excellent knowledge of Python and Golang or you are ready to quickly switch to these programming languages
• Strong Linux fundamentals
• Ability to write reliable code and and dig into complex problems
• Working proficiency in English

It will be an added bonus if you have: 

• Solid understanding of modern server architecture, and its components
• Experience with metrics/monitoring/alerting Prometheus-compatible stacks (like VictoriaMetrics)
• Good knowledge of computer networks
• Experience designing, developing, and running high-load distributed systems

We conduct coding interviews as part of the process.

Summary:

Location: Amsterdam
Duration: 3 months
Start date: June 2026 
Compensation: Paid
Eligibility: Current University student (Computer Science or related field), Recent Graduate or Early Career specialist
Work authorization: Permitted to work in the job’s location

Why work at Nebius
Nebius is leading a new era in cloud computing to serve the global AI economy. We create the tools and resources our customers need to solve real-world challenges and transform industries, without massive infrastructure costs or the need to build large in-house AI/ML teams. Our employees work at the cutting edge of AI cloud infrastructure alongside some of the most experienced and innovative leaders and engineers in the field.

Where we work
Headquartered in Amsterdam and listed on Nasdaq, Nebius has a global footprint with R&D hubs across Europe, North America, and Israel. The team of over 1400+ employees includes more than 400 highly skilled engineers with deep expertise across hardware and software engineering, as well as an in-house AI R&D team.

Your responsibilities will include

• Operation:
  • assist, where possible in day-to-day SRE operations tasks in NetInfra
  • deploy tested and approved changes following clear instructions
• Project work:
  • execute small and well-defined tasks from the backlog
  • together or instead: work on small and well-defined SRE project from backlog
  • create tests for their changes/project (if applicable)
  • write technical documentation about their work
  • track and update Jira tasks according to their progress
• Learning and growth:
  • actively study network and system fundamentals: Ethernet and ip networks, routing, Linux Kernel, eBPF, traffic control, ipvs, dpdk
  • learn internal tools, workflows and operational standards
  • learn container and platform fundamentals: Kubernetes (core architecture and networking), Helm, Terraform
  • learn configuration management and automation basics

• demonstrate strong interest and foundational knowledge in cloud providers, operations, networking, hardware, and software
• programming experience in any of Python, Go or C++
• basic understanding of the Network (ethernet, ip, tcp/udp, routing fundamentals)
• familiarity with Git
• basic understanding of containers, Kubernetes and IAC (Infra As Code) approach

What we offer

• Competitive salary and comprehensive benefits package
• Mentorship from experienced AI, ML, and cloud infrastructure professionals
• Hands-on experience with real customer workloads and production systems
• Opportunities for professional growth within Nebius
• A dynamic and collaborative work environment that values initiative and innovation
• Opportunity to be considered for a full-time role after the Early Talent Program

We’re growing and expanding our products every day. If you’re up to the challenge and are excited about AI and ML as much as we are, join us!

We are looking for a Senior Systems HPC Engineer to play a key role in building our hyperscaler platform, working across its core components while analyzing and optimizing the performance of large-scale GPU clusters at the intersection of hardware and software.

You will operate across the full stack—from hardware and system software to networking (InfiniBand/RoCE), virtualization (KVM/QEMU), and distributed communication layers (e.g., MPI, NCCL).

In this role you will

• Focus on understanding system behavior across multiple layers, identifying performance bottlenecks, and driving improvements that shape how our clusters are built, operated, tuned, and validated.
• Investigate and troubleshoot performance issues of GPU cluster under real workloads (training and inference)
• Evaluate and integrate new hardware, system configurations and tuning approaches through software stack
• Support complex performance-related escalations from internal teams and customers
• Work closely with infrastructure, software engineering and hardware vendor teams (e.g. NVIDIA, Mellanox, Intel)
• Contribute to hardware and cluster qualification (acceptance), ensuring systems meet performance expectations

We expect you to have:

• 5+ years of professional experience in system-level software development (focused on performance optimization, low-level programming).

• 3+ years of hands-on experience with Linux systems (administration, troubleshooting, and performance tuning).

• In-depth understanding of server architecture, including PCIe devices, NICs, Linux OS/Kernel, and high-performance computing (HPC) systems.

• Strong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python).

We conduct coding interviews as part of the process.

The role

The VPC (Virtual Private Cloud) team builds and operates the core networking layer of our cloud platform. We enable virtual machines to communicate reliably by abstracting them from the underlying physical network, providing seamless IP-based connectivity even as workloads move across the datacenter.

Our team designs secure, isolated private networks for customers, connects them to the public internet, and delivers essential networking services such as load balancers, firewalls, and security groups. Because nearly every cloud application depends on networking, VPC is a foundational service for the entire platform.

Stability and resilience are our top priorities—we engineer systems to remain reliable and operational even when parts of the cloud experience failures.

What we do:

• Increase service scalability
• Developing service functionality (e.g. IPv6 support, service endpoints, VPC peering, L7 load balancers and other networking services)
• Improve the internal architecture, optimizing interaction with related services 

In this position, your responsibility will be to:

• Develop control & data plane for Nebius Cloud network services
• Improve service performance and reliability
• Automate complex cross-service interaction scenarios
• Perform load testing for services

We expect you to have:

• Capable of writing reliable, high-performance code
• Proficient in C/C++ or Go and ready to learn both.
• Familiar with routing network traffic

It would be an added bonus if you had:

• Worked with VPP, DPDK, and the Linux kernel network subsystem
• Well-versed in virtual networks and overlays, SDN, NFV, DPI, network protocols, routing and tunneling, BGP, and MPL

We conduct coding interviews as part of the process.

The role 

We are building our L3 Support Line from scratch to serve as the datacenter center of expertise for servers, firmware (BIOS/BMC), and deep Linux diagnostics across Europe and the US.

This is a senior technical role focused on deep investigations, cross-site pattern detection, and driving permanent fixes with R&D and ODM vendors. You will turn complex incidents into scalable solutions and elevate L1/L2 capabilities through strong technical enablement.

You’re welcome to work in our office in Amsterdam, the Netherlands.

Your responsibilities will include: 

Deep Technical Investigation (Primary Focus)

• Lead root cause analysis beyond L2 depth (GPU failures, firmware issues, Linux-level faults, HW/SW interactions).

• Detect recurring patterns across sites and convert findings into durable fixes.

• Own technical workstreams during high-severity incidents.

Vendor & R&D Collaboration

• Build evidence packs and drive escalations with ODM and R&D.

• Push for firmware, component, and platform-level resolutions.

• Track outcomes and ensure knowledge flows back to operations.

Firmware & Platform Readiness (BIOS/BMC)

• Support validation and rollout of firmware updates (risk assessment, staging, rollback planning).

• Help operationalize platform standards across datacenters.

Knowledge & Enablement

• Create scalable runbooks, troubleshooting guides, and error catalogs.

• Turn investigations into playbooks that elevate L1/L2 teams.

Hands-on Support (As Needed)

• Travel to datacenters for complex troubleshooting, new platform readiness, or incident containment.

We expect you to have: 

• Strong hands-on experience with datacenter servers and deep Linux troubleshooting.

• Ability to diagnose across hardware, BIOS/BMC firmware, and Linux (logs, drivers, storage basics, performance triage).

• Structured incident response experience and clear communication under pressure.

• Experience driving evidence-based escalations with vendors/R&D.

• Fluent English (written and spoken).

It will be an added bonus if you have: 

• Strong familiarity with GPU server platforms and tooling (for example: nvidia-smi, dcgmi, Linux logs correlation).

• Experience with ipmitool and Redfish workflows, firmware lifecycle, and staged rollouts.

• Scripting skills (bash and basic Python) for log collection, triage automation, and simple reliability analysis.

• Exposure to OCP-based platforms and ODM manufacturing ecosystems.

• Experience supporting enterprise bare metal customers under contractual SLAs.

The role

Our CloudGate team is responsible for the software side of external network connectivity in our Cloud. We're building a traffic delivery system for a variety of scenarios: IPv4 connectivity, Cloud Interconnect, Egress NAT, and a network load balancer. They serve tens of millions of packets per second.

We have a control plane microservice architecture with gRPC transport and our own Database as our data warehouse.

What we do:

• Increase service scalability
• Developing service functionality with support for service endpoints and expansion of health check types
• Improve the internal architecture, optimizing interaction with related services 

In this position, your responsibility will be to:

• Developing a data plane for Nebius Cloud network services
• Improve service performance and reliability
• Automate complex cross-service interaction scenarios
• Perform load testing for services

We expect you to have:

• Capable of writing reliable, high-performance code
• Proficient in C and ready to learn Go/C++
• Familiar with routing network traffic

It would be an added bonus if you had:

• Worked with VPP, DPDK, and the Linux kernel network subsystem
• Well-versed in virtual networks and overlays, SDN, NFV, DPI, network protocols, routing and tunneling, BGP, and MPL

We conduct coding interviews as part of the process.

• Ensure reliability, availability and performance of compute nodes running VMs
• Analyze and debug Linux systems across user space and kernel space, understanding capabilities, limitations and trade-offs at each layer
• Troubleshoot complex production issues involving CPU, memory, NUMA, cgroups and scheduling
• Work hands-on with virtualization and containerization, primarily using QEMU/KVM and Linux-native technologies
• Design and evolve observability as a core capability of the node layer: metrics, logs, traces, alerts, SLIs and SLOs
• Lead incident response, root-cause analysis, and postmortems, driving long-term reliability improvements
• Collaborate closely with platform, kernel/hypervisor, GPU and infrastructure teams to improve system design and operability

• Experience with Kubernetes internals or node-level components
• Hands-on experience with low-level Linux debugging tools (e.g. perf, eBPF, ftrace, strace, kernel crash dumps)
• Familiarity with large-scale compute or bare-metal platforms
• Contributions to open-source infrastructure or system software
• Experience debugging hardware and driver-level issues, including GPUs, NVLink, InfiniBand

The Role

We’re looking for a Network Site Reliability Engineer (NetSRE) to help build and run the fundamental part of Nebius - the Network - the infrastructure everything else depends on. This is an engineering-first SRE role: you’ll set clear reliability targets, build the tooling and automation to meet them, and make the network safer to operate as we scale quickly.

Your responsibilities will include:

• Define and own reliability goals for network services and critical paths (SLIs/SLOs, availability targets, error budgets where it makes sense)

• Drive reliability improvements across the whole network: not only services, but also site readiness, inter-site connectivity (DCI), and operational standards

• Own incident response for your areas, lead investigations/postmortems, and turn failures into durable fixes (not repeated firefighting)

• Build and evolve observability: actionable metrics/logs/traces, alerting, and faster debug loops during and after incidents

• Design safer change workflows: automation, CI/CD, test/staging environments, canarying, rollbacks, and auditability for network changes

• Work closely with network engineers and platform teams to embed operability into designs and keep operations practical and fast

We expect you to have:

• Strong production Linux fundamentals and a structured approach to debugging complex systems

• Solid understanding of networking basics and how real networks fail (control plane vs data plane, latency/loss, failure domains, etc.)

• Hands-on experience operating high-availability systems and improving them over time (not just “keeping lights on”)

• Ability to write and maintain software/automation (Go is common for us; Python is also welcome)

• Experience with modern infrastructure tooling (e.g., IaC, CI/CD, container platforms) and comfort automating operational workflows

It will be an added bonus if you have:

• Experience with high-throughput traffic processing: load balancers, tunneling/decap, NAT64, or similar datapath-heavy systems

• Low-level networking performance/debug background (eBPF/XDP, DPDK, perf/ftrace, kernel networking internals)

• Experience building network-safe delivery pipelines (testing labs, staged rollouts, automated verification, drift detection)

• Background with large-scale network observability/telemetry (e.g., routing/flow telemetry, regression detection at scale)

The role

We are looking for a Senior Network Engineer to join our team to ensure smooth and stable operation of data center infrastructure, points of presence, and our own backbone network. The engineer will also design and develop data center networks with thousands of server ports, InfiniBand-based GPU cluster interconnect networks, and automation and management tools for such networks.

You’re welcome to work in our office in Amsterdam.

Your responsibilities will include:

• Provide technical design, operations, duties and assistance to related cross-functional teams, including the internal R&D team, HWaaS, and all-around cloud overlay & underlay network environments.
• Develop monitoring and automation tools.
• Contribute to the launch of new regions within our cloud and GPU platforms.

We expect you to have:

• Expert-level (jncie/ccie) expertise in MPLS, routing and switching Service Provider and DataCenter networks, Ethernet switching/vxlan, routing (BGP/isis), SR mpls+v6, traffic balancing/ECMP, l3 mpls VPN, and cloud overlay network technologies.
• Experience in developing and documenting a network design.
• Experience in developing plans for testing network infrastructure and vendors.
• Experience diagnosing problems with the TCP/IPv4/v6 protocol stack in a CLOS topology data center network.
• Knowledge of the design and internal architecture of modern network equipment, QoS mechanisms, and operations.
• Experience working with Juniper, Arista, Huawei, and Mellanox switches and routers.
• Working proficiency in English.

It would be an added bonus if you had:

• Working proficiency in any other European language
• Working knowledge of public clouds and GPU+infiniband networking
• Knowledge of software-defined networking overlays for the cloud environment
• Knowledge of Python, Go, or other popular programming languages in the Linux environment.
• Experience using these programming languages for task automation.

About the role:

Token Factory is a part of  Nebius Cloud, one of the world’s largest GPU clouds, running tens of thousands of GPUs. We are building an inference platform that makes every kind of foundation model — text, vision, audio, and emerging multimodal architectures — fast, reliable, and effortless to deploy at massive scale.

Responsibilities:

• Develop and optimize low-level kernels and runtime components for AI inference 

• Improve performance of inference engines GPU platforms 

• Profile and debug system-level and hardware-level performance issues 

• Integrate support for new hardware architectures (Hopper, Blackwell, Rubin) 

• Collaborate with ML and backend teams to optimize end-to-end execution 

Required Qualifications:

• Strong proficiency in C++, OR expertise in GPU programming with a focus on low-level high-performance coding and memory management 

• Experience in GPU programming or systems-level software development, e.g. operating system internals, kernel modules, or device drivers 

• Hands-on experience with profiling and debugging tools to identify performance issues on both CPUs and GPUs, and the ability to optimize code based on those findings. 

• Solid understanding of CPU/GPU architecture and memory hierarchy 

Preferred Qualifications: 

• Experience with GPU computing programming: CUDA, ROCm, CUTLASS, Cute, ThunderKittens, Triton, Pallas, Mosaic GPU 

• Familiarity with ML inference runtimes (e.g. TensorRT, TVM) 

• Knowledge of Linux internals, drivers, or compiler toolchains 

• Experience with tools like perf, VTune, Nsight, or ROCm profiler 

• Familiarity with popular inference engines (e.g. such as vLLM, sglang, TGI) 

We conduct coding interviews as part of the process.

The role

We’re looking for a Senior HPC Cluster Engineer to join our team and play a key role in the development of our cutting-edge hyperscaler platform. The GPU & InfiniBand team is responsible for enhancing and optimizing the core components of our Cloud platform, with a specific focus on GPU computing, InfiniBand networks, and the KVM/QEMU stack. You’ll work closely with hardware virtualization and device emulation technologies, ensuring high performance and security in multi-GPU, HPC environments. The role involves analyzing, troubleshooting, and improving infrastructure to support new hardware, fine-tuning system performance, and automating fault detection and resolution in a complex system.

In this position, you will be responsible for:

• Tuning the performance of GPU clusters and InfiniBand networks to ensure optimal operation in HPC and GPU-based environments.

• Analyzing and troubleshooting the root cause of issues related to GPUs and InfiniBand networks, and proposing corrective actions.

• Integrating new hardware into the existing infrastructure, including support for new GPU hardware through software stacks like Kubernetes, QEMU, and KVM.

• Enhancing automation systems for proactive monitoring, detecting, and resolving issues in GPU and InfiniBand environments.

• Configuring and managing GPU devices and InfiniBand fabrics, ensuring efficient and reliable operation.
  

We expect you to have:

• 5+ years of professional experience in system-level software development (focused on performance optimization, low-level programming).

• 3+ years of hands-on experience with Linux systems (administration, troubleshooting, and performance tuning).

• In-depth understanding of server architecture, including PCIe devices, NICs, Linux OS/Kernel, and high-performance computing (HPC) systems.

• Strong proficiency in one or more performance-oriented programming languages (C/C++, Go, Python).

It would be a plus if you have:

• Experience with GPU end-to-end testing in a cluster environment using InfiniBand networking.

• Proven track record of analyzing and optimizing the performance of HPC workloads (e.g., simulations, data analysis, AI/ML workloads).

• Familiarity with RDMA, RoCE, and InfiniBand protocols for high-performance communication.

• Background in Software-Defined Networking (SDN) and experience with HPC cluster networking.

• Understanding of QEMU/KVM virtualization and managing virtualized environments.

• Experience with deep learning frameworks such as PyTorch and TensorFlow, and their integration with HPC systems.

• Familiarity with collective communication libraries like MPI and NCCL for distributed computing. 

We conduct coding interviews as part of the process.

• Optimize I/O for emulated disk and network devices
• Integrate the hypervisor with other platform services and storage facilities for user data
• Efficiently distribute resources between virtual machines
• Improve guest system support
• Advance the cutting-edge of open source virtualization
• Provide low-level security for the hypervisor and emulator
• Provide general support, fix bugs, and monitor the upstream
• Collaborate with other team members and stakeholders

• 5+ years of professional software engineering experience
• Fluent in C programming language
• 3+years of experience with Linux
• At least 3 years of engineering experience with QEMU/KVM
• General understanding of x86-compatible systems (virtual memory, interrupts, privilege rings)
• Experience writing general system code in user mode for Linux, including debugging, analysis, and optimization tools (the emulator is built on the user mode system process for Linux)

• Aсcepted patches in Linux Kernel or QEMU/KVM
• Experience working with Linux kernel
• Some experience with ARMv8, including virtualization extensions
• Understanding of PCI, SCSI, and ACPI
• Experience working with the Linux kernel
• Excellent communication skills for cross-team collaboration
• Strong work ethic

We conduct coding interviews as part of the process.

The role 

We are looking for a Senior Frontend Developer to design and implement internal user interfaces using React and TypeScript. These interfaces support automation workflows that enable teams to efficiently manage hardware infrastructure of our company - tracking assets, orchestrating data center deployments, provisioning and configuring servers, installing operating systems and drivers, and resolving issues across distributed environments. You will contribute to the full product lifecycle - from concept and UX mockups to production deployment in container-based environments (Docker, k8s).

Your responsibilities: 

• Build and maintain a group of applications written in React and TypeScript.
• Design and refine UI/UX flows to improve usability and visual consistency.
• Translate product requirements and UX concepts into interactive interfaces. 
• Contribute to continuous improvement of the frontend architecture and developer experience.

We expect you to have:

• 5 years of experience with software development in one or more programming languages.
• Strong proficiency in React, TypeScript, HTML, and CSS.
• Experience with state management.
• Familiarity with UX design principles.

It would be nice if you have:

• Exposure to full-stack and DevOps concepts (Python, Docker, Linux, modern networks).
• Understanding of reactive programming principles.

We conduct coding interviews as part of the process.

The role

Your responsibilities will include:

• Participate in the design, deployment, and maintenance of high-performance cloud systems tailored for AI workloads.
• Arranging and performing hardware R&D tests and experiments on site in data center
• Troubleshoot and resolve complex system issues related to GPUs, networking (InfiniBand, NVLink), PCIe, and server infrastructure.
• Conduct deep investigations into hardware, software, and networking problems to ensure optimal system performance and reliability.
• Participate in development of tests and test methodologies for advanced GPU, InfiniBand, and Compute systems to benchmark and validate performance.
• Collaborate with cross-functional teams to improve system performance and reliability.
• Monitor system performance and continuously fine-tune configurations for maximum efficiency

Required Skills & Qualifications: 

• Strong knowledge of modern server architecture, especially in high-performance GPU-based environments.
• Hands-on experience with GPUs, Network, NVLink, and PCIe.
• Proficient in Linux systems, with expertise in Python and Bash scripting for automation.
• Demonstrated ability to troubleshoot complex system issues, including hardware, software, and networking problems.
• Experience with deep problem investigation, root cause analysis, and resolving performance issues in cloud-based or high-performance computing environments.
• Strong analytical and problem-solving skills, with a focus on optimizing system performance.
• Basic electronics modification by soldering and wiring

It will be an added bonus if you have:

• Knowledge of the Linux kernel and experience with kernel-level troubleshooting.
• Familiarity with electronic measurement equipment: oscilloscope, multimeter. 

About the Role
We are looking for a QA Engineer specializing in servers and server components to ensure quality, performance, reliability, and compatibility for purpose of modern server platforms.
In this role, you will work closely with hardware, firmware, system, services, and application teams to validate server architectures and components across the full product lifecycle - from early prototypes to production deployment.

Responsibilities
System & Component Validation
• Qualify complete server system architecture, including compute, memory, storage, networking, and accelerators
• Test and validate interactions between server components: CPU, DRAM, NVMe devices, Network interface cards (NICs), GPUs / accelerators.
• Perform individual component testing to verify performance, stability, and reliability prior to and after system integration
• Execute system-level validation under different configurations, workloads, and use cases
• Evaluate benchmark results against: technical specifications, business and application requirements, historical baselines and previous generations
• Identify performance regressions, instability, and reliability issues under sustained load and stress conditions
• Ensure hardware components and firmware meet business needs, performance goals, and specifications

Firmware, BIOS & BMC Validation
• Test and validate firmware for BMC / BIOS / FPGA
• Validate BMC functionality including IPMI/Redfish, sensors, power, thermal management, and logging
• Perform firmware upgrade, downgrade, and regression testing
• Assess firmware impact on performance, stability, and reliability across different hardware configurations
• Prepare and maintain test cases, checklists, and test reports
• Participate in platform validation for manufacturing and production readiness

Required
• Strong understanding of server system architecture
• In-depth knowledge of server components and their operation:
• Experience with component-level and system-level testing
• Understanding of BIOS/UEFI and BMC fundamentals
• Practical experience with Linux (command line, system tools, logs)
• Scripting skills (e.g. Bash, Python) for test and benchmark automation
• Ability to analyze performance data and identify regressions or anomalies
• Strong debugging, documentation, and communication skills

Nice to Have
• Experience with data center or server-grade hardware platforms
• Familiarity with common bench-marking and stress tools
• Understanding of PCIe topology and system interconnects
• Experience with reliability, power, and thermal testing
• Exposure to production, manufacturing, or fleet-scale validation
• Experience working with early hardware prototypes

The role 

We are seeking a highly skilled Systems Engineer (Cloudmeter) to join our team to support benchmarking of GPU platforms for machine learning and AI workloads. You will play a critical role in evaluating the performance of GPU-based hardware for various deep learning and AI frameworks, enabling data-driven decisions for platform optimization and next-generation hardware development.

In this position, your responsibility will be to:

• Work closely with hardware, development teams to profile and analyze GPU performance at the system and kernel level.
• Evaluate and compare GPU performance across different platforms, architectures, and software stacks (e.g., CUDA, ROCm).
• Perform acceptance testing for new GPU clusters, ensuring hardware and software meet performance, stability, and compatibility requirements for AI workloads.
• Perform experiments across diverse GPU system configurations to assess the impact of varying interconnect strategies and system-level optimizations on performance and scalability.

We expect you to have:

• Proficient in Unix/Linux, plus Python and Bash for automation.
• Good understanding of the GPU stack: CUDA,NCCL, drivers, and relevant libraries
• Proven ability to troubleshoot complex system issues including hardware, software, and networking problems.
• Familiarity with containerized environments (e.g., Docker, Kubernetes).

Ways to stand out from the crowd:

• Experience with modern deep learning frameworks (PyTorch, JAX, vLLM, Tensort-LLM)
• Experience with job schedulers and resource managers (Slurm, Volcano, etc.).

The role

Nebius is looking for a Technical Product Manager – Networks to join the team. In this role, you will will own the vision, roadmap, and priorities for networking services, including overlay (VPC) networks, underlay networks (data center fabric and WAN), and DNS.

Also, you will be responsible for shaping and managing backlogs for networking service teams and leading key, company-wide initiatives related to connectivity. This role requires strong technical depth combined with the ability to coordinate across engineering, development, product, technical support and go-to-market teams.

Your responsibilities will include: 

• Own and manage the product backlog for network service teams
• Lead and coordinate key cross-company implementations involving networking and connectivity
• Work closely with engineering and architecture teams to define product requirements and deliver new networking features
• Partner with product marketing and technical pre-sales/post-sales teams on technical publications, go-to-market activities, customer engagement, acquisition, and retention activities related to networking features
• Ensure the delivery of networking services that meet high standards for performance, security, scalability, and reliability.

We expect you to have: 

• Experience designing, implementing, or operating large-scale automated network solutions in senior engineering, architecture, or technical leadership roles (e.g., large enterprises, hyperscalers, cloud providers, or other advanced technology companies)
• Hands-on familiarity with technologies such as OVS, DNS, L2VPN, L3VPN, VXLAN, BGP, and IPv6 at scale
• Strong technical expertise in at least two of the following areas:
  • Linux networking stack
  • Overlay / SDN networking
  • ISP or large-scale service provider networking
  • DevNet / network automation
• Proven track record of delivering complex technical initiatives requiring coordination across multiple teams or stakeholders
• Technical leadership experience is a strong plus
• Product management experience is not required, but a strong willingness to learn and grow into the role is essential.

About Nebius

Nebius AI is an AI cloud platform with one of the largest GPU capacities in Europe. Launched in November 2023, the Nebius AI platform provides high-end, training-optimized infrastructure for AI practitioners. As an NVIDIA preferred cloud service provider, Nebius AI offers a variety of NVIDIA GPUs for training and inference, as well as a set of tools for efficient multi-node training. 

Nebius AI owns a data center in Finland, built from the ground up by the company’s R&D team and showcasing our commitment to sustainability. The data center is home to ISEG, the most powerful commercially available supercomputer in Europe and the 16th most powerful globally (Top 500 list, November 2023).  

Nebius’s headquarters are in Amsterdam, Netherlands, with teams working out of R&D hubs across Europe and the Middle East. 

Nebius AI is built with the talent of more than 500 highly skilled engineers with a proven track record in developing sophisticated cloud and ML solutions and designing cutting-edge hardware. This allows all the layers of the Nebius AI cloud – from hardware to UI – to be built in-house, distictly differentiating Nebius AI from the majority of specialized clouds: Nebius customers get a true hyperscaler-cloud experience tailored for AI practitioners. We’re growing and expanding our products every day. 

The role

The Compute Node team builds services for managing Virtual Machines running on GPU servers, integrating with disk management, virtual and InfiniBand networks. The team is also responsible for developing the Virtual Machine Scheduler that operates across clusters with thousands of servers and tens of thousands of GPUs, spanning multiple data centers in several regions.

We expect you to have: 

1. Containerization & Orchestration

• Experience with Kubernetes not only for deployment but for development is highly valued.

2. Virtualization

• KubeVirt and QEMU/KVM familiarity is a high plus.

3. Linux & System-level Understanding

• Solid knowledge of internal OS architecture, performance considerations, process isolation and resource management.

• Knowledge of POSIX, sysfs, system calls, and file systems.

• Familiarity with server architecture, PCIe devices, NICs, and kernel drivers.

4. Hardware Acceleration

• Experience or strong interest in working with GPUs, DPUs, or ARM architectures is desirable.

• Familiarity with the NVIDIA DOCA Software Framework will be an advantage.

5. Go, C++ Proficiency

• Knowledge of at least one of these languages, ready to learn or work with the others as needed.

• Strong grasp of concurrency, debugging, and profiling techniques.

We conduct coding interviews as part of the process.

About the role

As an IT (Sys Admin) Engineer, you will be working across identity, devices, SaaS platforms, and supporting end users. You should be organized, collaborative, and eager to learn while working within established systems and processes.

Remote Working 2-3 days a week in the office Amsterdam.

Responsibilities 

• Provide reliable, hands-on IT support for our in-office and remote employees by efficiently resolving Help Desk tickets while delivering excellent customer service.
• Support Together’s MDM fleet comprising macOS and some Linux devices.
• Provide in-office support by troubleshooting basic network issues and our A/V systems.
• Help manage and optimize Okta and our core SaaS tooling by administering and improving integrations and role-based access controls.
• Support daily procurement and asset management operations by coordinating hardware purchasing and tracking while maintaining accurate asset inventory and device assignments throughout their lifecycle (purchase to decommission).
• Help maintain clear, organized, and accessible IT documentation by creating easy-to-understand technical documentation for both technical and non-technical audiences.
• Contribute to IT initiatives by supporting project execution, managing priorities, and ensuring clear communication with stakeholders through regular updates.
• Help maintain a secure environment by supporting basic security hygiene to include access reviews and basic identity security tasks.
• Support onboarding and offboarding of Together employees, interns, and contractors.
• Support the IT team by creating reliable automations that reduce manual work and improve operational efficiency.
• Collaborates well with a team, but also able to work autonomously when needed: working in tandem with other locations and having consistency in practices, documentation, asset mgmt.,etc.

Requirements

• Practical experience administering Okta, including users, groups, and basic app integrations (Terraform a plus).
• Strong knowledge of Google Workspace.
• Hands-on MDM experience with macOS, ideally with FleetDM.
• Ability to support macOS, Linux, iOS, and Android devices.
• Experience participating in procurement and asset management processes.
• Clear, concise technical writing skills for documentation and knowledge base content.
• Excellent communication and customer service abilities.
• Basic understanding of security principles and best practices.
• Experience with low‑code automation tools (Serval, Okta Workflows, Gumloop).
• Scripting familiarity with common languages (Bash, Python).
• Understanding of API integrations and webhooks and how to use them effectively.
• Experience with AWS provisioning and Identity Center

Nice To Haves

• Exposure to security and compliance frameworks (SOC 2, ISO 27001, NIST, CIS, FedRAMP).
• Experience with AI tools, agents, MCPs, automations, and prompting. 
• Familiarity with Notion and Linear for documentation and project management.
• HRIS integration experience with systems like HiBob and Workday.

About Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers in our journey in building the next generation AI infrastructure.

Equal Opportunity

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

Please see our privacy policy at https://www.together.ai/privacy 

About the Role

In this role, you will design and deliver multi-petabyte storage systems purpose-built for the world’s largest AI training and inference workloads. You’ll architect high-performance parallel filesystems and object stores, evaluate and integrate cutting-edge technologies such as WekaFS, Ceph, and Lustre, and drive aggressive cost optimization-routinely achieving 30-50% savings through intelligent tiering, lifecycle policies, capacity forecasting, and right-sizing. 

You will also build Kubernetes-native storage operators and self-service platforms that provide automated provisioning, strict multi-tenancy, performance isolation, and quota enforcement at cluster scale. Day-to-day, you’ll optimize end-to-end data paths for 10-50 GB/s per node, design multi-tier caching architectures, implement intelligent prefetching and model-weight distribution, and tune parallel filesystems for AI workloads. 

Hybrid Working 2 days a week at our offices in Amsterdam

Responsibilities

• Design multi-petabyte AI/ML storage systems; integrate WekaFS, Ceph, etc.; lead capacity planning and cost optimization (30-50% savings via tiering, lifecycle policies, right-sizing).
• Design/optimize RDMA, InfiniBand, 400GbE networks; tune for max throughput/min latency; implement NVMe-oF/iSCSI; troubleshoot bottlenecks; optimize TCP/IP for storage.
• Build Kubernetes storage operators/controllers; enable automated provisioning, self-service abstractions, multi-tenant isolation, quotas; create reusable Helm/Terraform patterns.
• Deliver 10-50 GB/s per GPU node; optimize caching (weights/datasets/checkpoints), parallel filesystems, and data paths; troubleshoot with profiling tools; scale to thousands of nodes.
• Build multi-tier caches (local NVMe, distributed, object); optimize data locality and model-weight distribution; implement smart prefetching/eviction.
• Implement monitoring, alerting, SLOs; design DR/backups with runbooks; run chaos engineering; ensure 99.9%+ uptime via proactive/automated remediation.
• Partner with ML/SRE teams; mentor on storage best practices; contribute to open-source; write docs, postmortems, and public learnings.

Requirements

• 8+ years in storage engineering with 3+ years managing distributed storage at multi-petabyte scale

• Proven track record deploying and operating high-performance storage for GPU/HPC clusters

• Deep Kubernetes and cloud-native storage experience in production environments

• Strong coding skills in Go and Python with demonstrated ability to build production-grade tools

• BS/MS in Computer Science, Engineering, or equivalent practical experience

• History of technical leadership: designing systems that significantly improved performance (>3x), reliability (99.9%+ uptime), or cost efficiency

• Distributed Storage Systems: Deep expertise in WekaFS, Lustre, GPFS, BeeGFS, or similar parallel filesystems at multi-petabyte scale

• Object Storage: Production experience with S3, MinIO, Ceph, or R2 including performance optimization and cost management

• Kubernetes Storage: CSI drivers, StatefulSets, PersistentVolumes, storage operators, and custom controllers

• Storage optimization for GPU workloads, RDMA/InfiniBand networking, parallel filesystem optimization (100+ GB/s aggregate cluster throughput)

• Programming: Go and Python for automation, operators, and tooling

• Infrastructure as Code: Terraform, Ansible, Helm, GitOps (ArgoCD)

• Linux Storage Stack: Advanced knowledge of filesystems (ext4, xfs), LVM, NVMe optimization, RAID configurations

• Observability: Prometheus, Grafana, Thanos architecture and operations

Nice to Have Skills

• GPU Direct Storage (GDS), NVMe-oF, storage networking (100GbE/400GbE)

• ML/AI storage patterns (model weights, checkpointing, dataset caching)

• Kubernetes operator development (controller-runtime, kubebuilder)

• Storage snapshots, cloning, and thin provisioning

• Backup and disaster recovery (Velero, Restic, cross-region replication)

• Storage encryption (at-rest and in-transit), security and compliance
• Storage benchmarking and profiling tools (fio, iperf3, iostat, blktrace)

About Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers in our journey in building the next generation AI infrastructure.

Equal Opportunity

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

Please see our privacy policy at https://www.together.ai/privacy  

About the Role

As a Senior Network Engineer at Together, you are responsible for designing, implementing, and maintaining our network infrastructure to ensure seamless connectivity and optimal performance for all user-facing services and production systems. As both a strategic planner and a hands-on engineer, you apply sound networking principles, operational discipline, and advanced automation to our network environments.

You specialize in networking systems—including routing, switching, network security, and protocols—implementing best practices for availability, reliability, and scalability. You have a keen interest in network design, optimization, and emerging technologies in HPC-based data center networking.

Outstanding problem-solving abilities and a comprehensive understanding of fundamental network theory are also critical to your success.

Responsibilities

• Design, deploy, manage and maintain global multi-vendor, multi-protocol high performance compute networks.
• Analyze data to diagnose and identify root causes to network issues to minimize downtime
• Evaluate and recommend network technologies, hardware, and software solutions.

• Participate in design reviews to ensure the proposed network architecture aligns with business needs and is optimized for performance, scalability, and reliability. 
• Manage relationships with external vendors and partners to test and verify hardware and software selections.

• Develop, and deploy systems and tools to keep all networks running reliably and efficiently
• Establish and implement industry best practices and contribute to the design of new scalable network solutions
• Ensure compliance with IT governance standards and best practices.
• Lead projects to address complex technical challenges, directly contributing to roadmaps and partner alongside the best engineers in the industry to develop world-class solutions

Requirements

• 8+ years of professional experience building, managing, and supporting large-scale hybrid data center networks (excluding enterprise networks).
• High level of proficiency with TCP/IP networking architecture and technologies such as BGP, OSPF, VXLAN, EVPN, and QoS.
• Experience developing network automation pipelines using Python, Ansible, or other languages/tools utilized in infrastructure automation.
• Proficient in using tools such as Wireshark, tcpdump, nmap, MTR, and curl to identify connectivity issues, latency problems, and network bottlenecks.
• Experience designing and supporting multi-tenant networks
• Hands-on experience deploying and supporting network devices from Cisco, Arista, Juniper, and Mellanox.
• Experience working with cloud networks such as AWS, GCP, and Azure.
• Solid experience working in and troubleshooting within a Linux environment.
• Must have either RoCE or Infiniband real work experience.

Preferred

• Experience with Docker, Kubernetes, or Slurm a plus 
• Understanding of AI training workloads and the demands they exert on networks a plus

About Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers and engineers in our journey in building the next generation AI infrastructure.

Equal Opportunity

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

Please see our privacy policy at https://www.together.ai/privacy  

This is Adyen

Adyen provides payments, data, and financial products in a single solution for customers like Facebook, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. 

For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. The people of Adyen are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster.

Senior Observability Infrastructure Engineer

We are looking for an experienced Observability Infrastructure Engineer to join our Platform Engineering organization. You will be part of the team responsible for building and running Observability pillars on premise and on Kubernetes. Our systems collect, process, and store the logs, metrics, and traces that allow hundreds of product teams to monitor their services in real time.

This is a role for a builder and a problem solver who enjoys deep technical troubleshooting across distributed systems and then turns recurring issues into automated, repeatable solutions. You will work in a large-scale environment where we manage petabytes of data and thousands of servers. We are currently in the middle of a major transformation:  focusing on automation of operations and enabling self service for our users.

What you will do

• Build the next generation of our platform: Design and implement the future architecture of our logging and metrics systems. You will play a key role in redesigning our infrastructure to support new global regions, ensuring data isolation and regulatory compliance in different geographies, and more.
• Own infrastructure operations: You will take full ownership of our hybrid infrastructure, managing the lifecycle of over 1,500 servers across both bare-metal and Kubernetes environments.
• Automate to reduce toil: You will write code in Go or Python to eliminate manual operational tasks. Your goal is to build self-healing systems that do not require manual intervention during the night. You will improve our CI pipelines to ensure that changes to our clusters are safe, predictable, and automated. 
• Optimize for scale and performance: You will dive deep into performance bottlenecks within our distributed tracing and logging pipelines. We deal with high-volume data streams that can overwhelm standard configurations. You will tune our Elasticsearch clusters, optimize Prometheus and VictoriaMetrics storage, and ensure our OpenTelemetry implementation can handle peak traffic without missing a beat.
• Reliability and Engineering: You will participate in on-call rotations, but your primary focus will be engineering solutions that stop alerts from firing in the first place. You will help us upgrade our stack to the latest versions and ensure our platform remains secure and performant. You will improve the self-service experience by implementing automated guardrails and quota management to prevent noisy tenants from destabilizing the platform, while designing safer API access patterns for our users.

What you bring

• 10+ years of experience in the observability domain or in a relevant platform/infrastructure domain.
• Observability Stack Expertise: You have hands-on experience operating core telemetry data stores at scale e.g. Elasticsearch/Opensearch/VictoriaLogs/Clickhouse for logging, Prometheus/ VictoriaMetrics for metrics and Grafana Tempo for distributed tracing.
• Linux Experience: You understand the operating system at a kernel level and can debug complex networking, file system, and performance issues on both bare metal and virtualized hardware .
• Production Kubernetes Experience: Proven hands-on experience operating, and troubleshooting production workloads on Kubernetes (on-prem and/or cloud), including strong day-to-day use of kubectl and Kubernetes primitives (e.g. Namespaces, Pods, Deployments/StatefulSets, Services, Ingress, ConfigMaps/Secrets)
• Software Engineering Mindset: You are proficient in Go or Python and do not just write scripts; you build tools and automation platforms that treat infrastructure as code.

Nice to have

• Experience with large scale, multi tenant isolation and quota or cost governance approaches for telemetry platforms.​
• Familiarity with regulated environments where security, audibility, and data handling requirements shape platform design decisions.​

Our Diversity, Equity, and Inclusion commitments

Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you're from, we welcome you to be your true self at Adyen.

Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application!

What's next?

Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 10 business days. Our interview process tends to take about 4 weeks to complete but may fluctuate depending on the role. Learn more about our hiring process here. Don't be afraid to let us know if you need more flexibility.

This role is based out of our Amsterdam office. We are an office-first company and value in-person collaboration; we do not offer remote-only roles.

We are Datadog's in-house product experts. The Technical Solutions team enables Datadog's worldwide growth by educating potential clients and ensuring that existing customers are happy and successful. We share our technical and product expertise with customers via multi-channel technical support, demos, and presentations. You’ll be joining a team and company where you will be challenged, but also will immediately witness your contributions to Datadog.

At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

What You’ll Do:

• Manage, develop, coach and mentor Premier Support Engineers , Federal Support Engineerss] and/or people managers and their teams who respond to client requests, reproduce and troubleshoot issues, and dive into Datadog’s 400+ integrations
• Act as the owner for your team’s accountability and performance - managing performance reviews, performance plans, and any employee relations issues for your direct reports
• Partner with Support team senior leadership to oversee team projects and initiatives to improve productivity, process or procedure
• Collaborate with internal teams and customers on high-priority escalations and act as a resource to resolve escalations from team members as necessary

Who You Are:

• Passionate about people management and/or mentorship with previous experience leading a team, including managing other managers
• Self-motivated, detail-attentive, and have a desire for continuous learning 
• A critical thinker who defaults to a client-centric approach and uses data to make informed decisions
• A tinkerer with some programming experience and a basic knowledge of Linux
• Active contribution to open-source projects (code, bug reports, etc.) and the Engineering Community (Meetups, etc.)

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.

Benefits and Growth:

• Best-in-breed onboarding
• Generous global benefits
• Intra-departmental mentor and buddy program for in-house networking
• New hire stock equity (RSUs) and employee stock purchase plan (ESPP)
• Continuous professional development, product training, and career pathing
• An inclusive company culture, able to join our Community Guilds and Inclusion Talks

Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog.

Datadog Sales Engineers help qualify and close opportunities with customers and partners. You will provide technical expertise through sales presentations, product demonstrations, and supporting technical evaluations (POCs). Sales Engineers have a voice with the product team to help prioritize features based on input from customers, competitors, and partners. Additionally, you will work with various teams to resolve customer concerns, escalate bug issues, and serve as an ambassador for our brand. If you want to join a friendly, passionate team with limitless potential, we’d love to meet you!

At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

What You’ll Do:

• Partner with the sales team to articulate the overall Datadog value proposition, vision and strategy to customers
• Continually learn new technology to build competitive knowledge, technical skill, and credibility
• Deliver product and technical presentations with potential clients
• Have a direct line of communication with the product team to collaborate on feature requests
• Help clients onboard the product and assist when they run into roadblocks.
• Think creatively about a wide variety of technical challenges during the pre-sales life cycle 

Who You Are:

• Knowledgeable and experienced with DevOps monitoring or architecture tools.
• Comfortable and confident in delivering technical presentations/demos to either external customers or internal teams
• Able to think creatively about a wide variety of challenges. You're going to find new things every day
• Previously experienced in systems administrations: Windows or Linux
• Able to sit up to 4 hours, traveling to and from client sites
• Able to travel via auto, train or air up to 25% of the time
• Fluent in written and spoken Turkish and English

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.

Benefits and Growth: 

Best-in-breed onboardingGenerous global benefitsIntra-departmental mentor and buddy program for in-house networkingNew hire stock equity (RSUs) and employee stock purchase plan (ESPP)Continuous professional development, product training, and career pathingAn inclusive company culture, able to join our Community Guilds and Inclusion Talks

Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog.

We are Datadog's in-house product experts. The Technical Solutions team enables Datadog's worldwide growth by educating potential clients and ensuring that existing customers are happy and successful. Premier Support Engineers (PSEs) are primarily focused on assisting prospects and customers with any technical questions about Datadog. PSEs engage with Datadog’s Premier Customers via standard technical support channels, but are also involved with cadence calls, demos/presentations, conferences, and various side projects. You will work directly with Datadog’s Premier Customer base, and will be immersed in a fast-paced environment where you will be challenged, but will also immediately witness your contributions to Datadog and to our customers.

At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

What You’ll Do:

• Respond to client requests (phone / chat / tickets) on our fast paced team while continuing to educate our clients on the use of the platform
• Develop relationships with our Premier Customers, working hand-in-hand to truly know their distinct environment
• Reproduce issues and dive into the 600+ integrations that Datadog works with
• Build out documentation and knowledge based articles for a variety of technology
• Drive product conversations based on needs and problems learned during client interactions
• Participate in routine health check meetings with Premier Customers
• Work from a Datadog office 3 - 5 days per week 

Who You Are:

• Experienced in multi-channel technical support at a SaaS company (2+ years of related experience)
• A tinkerer with some programming experience and a basic knowledge of Linux
• Self-motivated, detail-attentive, and have a desire for continuous learning 
• A critical thinker who defaults to a client-centric approach
• A decision maker but know when the decision should be escalated
• Have been in a Premium/Enterprise technical support role previously
• Knowledgeable of current infrastructure and monitoring solutions and technologies
• Able to work a rotating schedule that requires weekend availability  

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.

Benefits and Growth:

• Best-in-breed onboarding
• Generous global benefits
• Intra-departmental mentor and buddy program for in-house networking
• New hire stock equity (RSUs) and employee stock purchase plan (ESPP)
• Continuous professional development, product training, and career pathing
• An inclusive company culture, able to join our Community Guilds and Inclusion Talks

Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog.

#LI-Hybrid

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

As a Trading Systems Engineer, you’ll have an opportunity to exercise your extensive skills while helping solve complex technical problems.  You’ll work closely with trading, infrastructure and software development teams to provide smooth support for our technology. We’ll ask you to communicate directly with exchanges, traders and developers to iron out any problems that arise.

Qualifications & Skills:

• Minimum of 5 years working in trade support, site reliability engineering or related fields
• Bachelor’s degree in STEM or related field
• Familiarity with trading platforms and financial markets
• Thrives in high-pressure situations while working alongside traders, developers and other engineering teams
• Strong problem-solving skills and the ability to troubleshoot technical issues under pressure
• Excellent communication skills, both written and verbal
• Knowledge of Linux/Unix environments
• Experience with scripting languages such as Python and Bash for automation tasks
• Ability to devise complex SQL database queries and updates
• Basic networking knowledge, including multicast, TCP/IP, DNS, DHCP and common network troubleshooting tools

What you’ll be working on:

• Maintaining the health and availability of a world class trading eco-system
• Responding to support requests from our traders and software engineers
• Contributing to our automation and monitoring solutions, reducing manual configuration and improving uptime
• Liaising with external trading partners, such as financial exchanges and clearing firms, to resolve technical issues
• Onboarding new trading desks, trading systems and technologies

For more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at https://drw.com/privacy-notice.

California residents, please review the California Privacy Notice for information about certain legal rights at https://drw.com/california-privacy-notice.

#LI-MM1

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

As a Trading Systems Engineer you’ll collaborate with trading, infrastructure, and software development teams, working closely with exchanges, traders, and developers to support ongoing improvements and keep our trading technology performing at its best.

As markets evolve toward 24×7 trading, we’re expanding coverage to ensure our systems run smoothly during high impact periods that extend beyond the traditional Monday–Friday schedule. In this role, you’ll have the opportunity to work a non-traditional 5-day shift, depending on what best fits your schedule, for example Tuesday to Saturday, including Saturday working. This flexible coverage model allows you to make a critical impact during peak trading hours while enjoying off days during quieter parts of the week. 

What You’ll Be Working On:

• Keeping trading systems healthy and available by proactively spotting and resolving potential issues
• Responding to trader and engineer requests with both urgency and understanding of the bigger operational context
• Participating in the onboarding of new desks and systems, thinking ahead about how they’ll fit into the broader ecosystem
• Learning the trading environment deeply so you can anticipate challenges and suggest improvements

 What we Value:

• Intent over Instruction: we’ll share what we’re trying to achieve; you’ll help determine the best way to get there
• Responsibility and trustworthiness: you follow through and communicate progress and results clearly
• Continuous learning and adaptability: when conditions change, you adjust while keeping the mission in mind
• Collaboration: you seek input when needed but are comfortable making informed decisions yourself

About You:

• You enjoy diagnosing problems and thinking creatively about solutions
• You’re excited about fast-moving environments and want to see your work make an impact quickly
• You learn by doing and feel comfortable diving into unfamiliar technology

Qualifications & Skills:

• 2+ years of experience in trade support, site reliability engineering, or a related technical role
• Bachelor’s degree in computer science, engineering, or related STEM field
• Experience with maintaining and troubleshooting complex distributed systems
• Demonstrated knowledge of network communications, including use of multicast networking
• Exposure to containerized applications (e.g., Docker, Kubernetes) is a plus
• Experience with incident response and root cause analysis
• Ability to coordinate multiple priorities under time pressure
• Excellent written and verbal stakeholder communication skills
• Familiarity with programming languages (e.g., Python, Go, Bash, PowerShell) for basic automation tasks
• Competence in a broad range of technologies, spanning cloud platforms, containerization, monitoring/alerting systems, and distributed messaging platforms (e.g., AWS, Kubernetes, Docker, Splunk, Prometheus, Grafana, RabbitMQ)
• Experience with Linux/Unix environments
• Prior experience supporting electronic trading systems preferred.

Schedule: This position will require working on Saturdays and providing holiday coverage as needed by the department.

For more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at https://drw.com/privacy-notice.

California residents, please review the California Privacy Notice for information about certain legal rights at https://drw.com/california-privacy-notice.

#LI-MM1

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.  

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.

Overview

We're looking to hire for our Data side of our AI team at Speechify. This role is responsible for all aspects of data collection to support our model training operations. We are able to build high-quality datasets at petabyte-scale and low cost through a tight integration of infrastructure, engineering, and research work. We are looking for a skilled Software Engineer to join us.

What You’ll Do

• Be scrappy to find new sources of audio data and bring it into our ingestion pipeline
• Operate and extend the cloud infrastructure for our ingestion pipeline, currently running on GCP and managed with Terraform.
• Collaborate closely with our Scientists to shift the cost/throughput/quality frontier, delivering richer data at bigger scale and lower cost to power our next-generation models.
• Collaborate with others on the AI Team and Speechify Leadership to craft the AI Team’s dataset roadmap to power Speechify’s next-generation consumer and enterprise products.

An Ideal Candidate Should Have

• BS/MS/PhD in Computer Science or a related field.
• 5+ years of industry experience in software development.
• Proficiency with bash/Python scripting in Linux environments
• Proficiency in Docker and Infrastructure-as-Code concepts and professional experience with at least one major Cloud Provider (we use GCP)
• Experience with web crawlers, large-scale data processing workflows is a plus
• Ability to handle multiple tasks and adapt to changing priorities.
• Strong communication skills, both written and verbal.

What we offer

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest-growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

This is a full-time internship based in Amsterdam starting in September. It is only open to students currently in full-time education based in The Netherlands. 

We are KRAFTON – a global collective of game development studios and publishing teams dedicated to creating innovative entertainment experiences. While you may know us through our flagship title, PUBG: BATTLEGROUNDS, our portfolio covers a diverse range games; from indie to AAA – made by studios all around the world.

Amsterdam is the home of KRAFTON Europe, where we cover publishing & marketing for the EMEA region, as well as manage our Esports and other activities. We are also currently building a new PUBG game, with a large team of developers based here in-house.

As our IT Support Intern, you will get the opportunity to work in a busy, technologically forward business. You’ll engage with our users; helping with issues and escalating them where needed. You’ll also support with ongoing projects and get the opportunity to provide your own ideas to help us level up and learn together.

Basic Roles and Responsibilities:

• Monitor Slack channels and other sources of communication for incoming tasks
• Triage and escalate tasks when needed
• Shadow current team members to understand the roles and to learn
• Actively engage in ongoing IT projects, aiding the team

What we’re ideally looking for:

• Currently engaged in some form of IT or Computer Science study at university
• Experience with Windows and Linux systems
• Experience with Computer hardware and PC builds
• Someone proactive, eager to learn and motivated to succeed

What We Offer:

• The opportunity to work and contribute to meaningful projects in a fast-paced, international business.
• An internship allowance of 500 EUR gross per month
• Full coverage of commuting costs if you do not have a weekday Student OV Card
• Lunch with a value of up to 18 EUR (you pay 4.05 EUR tax) per day.

More about our Amsterdam office… Our office is situated in Amsterdam Zuid, a buzzing business hub. We are just steps away from Zuid Station, ensuring excellent accessibility for commuting and travel.

At KRAFTON, we strive to create a safe, inclusive, and harmonious atmosphere. We welcome applications from all backgrounds, genders, and identities.

If you’re ready to kickstart your IT career, apply right away!

As a Linux Engineer in the Global Linux team, you will design, build and operate the critical infrastructure that powers our trading environment. The team owns both large-scale bare-metal Linux platforms and on-prem Kubernetes clusters across our global datacenters.

You will play a key role in evolving our Kubernetes platform while continuing to support and improve our high-performance Linux estate.

What you’ll do

Design, deploy and operate on-prem Kubernetes clusters in a bare-metal environment (Rancher-managed)

• Maintain and improve our bare-metal Linux infrastructure, including provisioning, lifecycle management and performance tuning

• Own and operate core Kubernetes components including Cilium (CNI), ArgoCD (GitOps), and Rancher

• Build and maintain CI/CD workflows for infrastructure and cluster deployments using ArgoCD and GitHub Actions

• Develop and maintain infrastructure as code using Terraform and bespoke on-prem systems

• Participate in on-call rotation covering both Kubernetes clusters and other Linux-based production systems

• Drive reliability, scalability and performance improvements across both containerized and non-containerized workloads

• Contribute to monitoring, observability and security posture across the Linux and Kubernetes platforms

• Ensure the broader team can effectively operate and support the Kubernetes and Linux platforms by building clear documentation, operational runbooks, and providing practical, hands-on guidance

Who you are

• Strong Linux systems engineering experience in production environments

• Hands-on experience operating Kubernetes on-prem (not only managed cloud offerings)

• Experience with:

  • Rancher

  • Cilium or other CNI technologies

  • ArgoCD (GitOps workflows)

  • Terraform

  • CI/CD systems such as GitHub Actions

• Solid understanding of networking fundamentals (L2/L3, routing, firewalls, load balancing)

• Experience troubleshooting performance issues across kernel, container and network layers

• Production mindset with experience in incident response and post-mortem driven improvements

Nice to have

• Experience building monitoring stacks (e.g. Prometheus, Grafana)

• Experience with Kubernetes security controls (network policies, RBAC, policy engines)

• Knowledge of low-latency or performance-sensitive environments

• Experience contributing to internal platform tooling

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.
• The opportunity to work alongside best-in-class professionals from over 50 different countries.
• 25 paid vacation days in your first year, increasing to 30 from your second year onwards.
• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.
• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.
• Training and continuous learning opportunities, including access to conferences and tech events.

How to apply
Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Please note:

• We do not require any assistance from third-parties including agencies in the recruitment of this role
• We cannot accept applications via email

Diversity statement
Optiver is committed to diversity and inclusion.

The Trading Operations Production Support Engineering team is responsible for maintaining and scaling Optiver’s low-latency trading systems. The team ensures a safe, stable, and efficient production environment while supporting profitability and sustainable growth across various regions. Collaborating closely with traders, development, and operational teams, the engineer will deploy, monitor, troubleshoot, and optimize our trading infrastructure to enhance reliability, performance, and automation.

What you'll do

• Provide technical expertise and support to high-frequency trading floors, troubleshooting complex issues and resolving incidents in a fast-paced, dynamic setting.
• Deploy, maintain, and monitor proprietary trading applications, ensuring stability and performance in the trading environment.
• Review and analyze incidents to identify recurring themes, driving improvements to enhance automation and operational efficiency.
• Coordinate deployments of new trading products, systems, and exchanges, ensuring readiness for events such as corporate actions or special announcements.
• Architect and maintain services to maximize reliability, ensuring the trading systems operate within performance thresholds.
• Collaborate with development teams to establish best practices and ensure the long-term stability of production systems, even under extreme conditions.
• Set standards for system configuration and deployment to minimize risks and support smooth scaling.
• Manage the colocation to ensure the right level of redundancy and capacity for growth is available.
• Automate system management processes, while maintaining control over critical operations.
  
  

Who you are
Technical Skills:

• Solid experience managing complex distributed systems in Linux environments (L2/L3 support), with a strong understanding of networking fundamentals, build, deployment, and version control systems.
• Proficiency with CI/CD tooling and scripting in Python or similar languages to automate tasks.
• Experience with relational databases (e.g., PostgreSQL) or other database systems.
• Demonstrated ability to drive system improvements and work across global teams to deliver changes.

Non-Technical Skills:

• A collaborative team player with a positive attitude, capable of coordinating effectively across departments.
• A pragmatic and logical thinker who thrives under pressure in high-intensity environments, with strong troubleshooting skills and the ability to resolve incidents efficiently.
• Effective communicator, able to clearly explain technical concepts and ask insightful questions.
• Highly organized, able to manage multiple responsibilities while keeping stakeholders informed.
• Passionate about technology, curious about the interaction between hardware and software, and driven to learn and grow by embracing frequent change.
• Prior experience in high-frequency trading environments is a plus, but not required.

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.
• The opportunity to work alongside best-in-class professionals from over 50 different countries.
• 25 paid vacation days in your first year, increasing to 30 from your second year onwards.
• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.
• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.
• Training and continuous learning opportunities, including access to conferences and tech events.
  
  

How to apply
Are you interested in furthering your career on one of the most dynamic and exciting trading floors in Europe?
Apply directly via the form below for the position of Trading Operations Engineer. If you have any questions feel free to contact our Recruiter team via recruitment inquiry form.
Please note:

• We cannot accept applications via email for data protection reasons.
• We do not require any assistance from third-parties including agencies in the recruitment of this role

Diversity statement
Optiver is committed to diversity and inclusion.

Our Linux engineering team ensures that our critical trading servers and infrastructure operate efficiently and reliably across the globe. In a highly customized, bare-metal environment powered by proprietary tools and technology, you’ll help design and implement cutting-edge solutions that enable scalable technological evolution while maintaining peak performance together with speed and precision.

What you'll do

• Designing, deploying, and managing the lifecycle of a large-scale fleet of Linux servers across multiple data centers, ensuring reliability, performance, and scalability.
• Architecting, building, and maintaining systems that drive efficiency and support Optiver’s evolving technology stack.
• Ensuring system reliability by swiftly resolving incidents and optimizing performance to meet trading demands, even during extreme market conditions.
• Researching and implementing new technologies or building enhanced in-house solutions to improve performance and system stability.
• Bridging the gap between hardware and software to ensure seamless interaction and integration.
• Optimizing system and kernel performance, including CPU affinity, NUMA balancing, HugePages, IRQ tuning, and other low-level configurations.
• Developing and maintaining automation tools using Python to enhance system efficiency.
• Monitoring system health and performance using observability tools such as Prometheus, Grafana, and Alertmanager.
• Managing system provisioning and infrastructure deployment using Infrastructure-as-Code tools like Ansible and/or Terraform.
• Joining our rotating support and on-call roster to facilitate global trading operations.

Who you are

• Experience in Linux engineering, debugging, administration, and OS system provisioning

• A solid understanding of networking fundamentals, including TCP/IP, DNS, TCP/UDP/multicast, and packet analysis.

• Hands-on experience with system/network tools such as EBPF, tcpdump, strace, ntp/ptp, lsof, nc.

• Experience with performance tuning at both the kernel and hardware level, including CPU pinning, cache optimizations, and BIOS/UEFI tuning.

• Experience with Linux security hardening techniques.

• Experience managing SAN storages.

• Familiarity with CI/CD pipelines, version control systems (Git), and PR-based workflows.

• Strong experience with monitoring and alerting tools like Elastic, Prometheus, Grafana, and Alert Manager.

• Proficiency in Python for automating operational tasks and system administration.

• Ability to manage large projects, work collaboratively in a team, and communicate effectively to drive technical improvements.

• Willingness to learn new technologies, navigate frequent change, and contribute to a high-performance engineering environment.

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.
• The opportunity to work alongside best-in-class professionals from over 50 different countries.
• 25 paid vacation days in your first year, increasing to 30 from your second year onwards.
• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.
• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.
• Training and continuous learning opportunities, including access to conferences and tech events.
  
  

How to apply
Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Please note:

• We do not require any assistance from third-parties including agencies in the recruitment of this role
• We cannot accept applications via email
  
  

Diversity statement
Optiver is committed to diversity and inclusion.

We’re looking for a Test and Automation Engineer to join our hardware R&D team building long-range HF communication systems. You’ll build and scale the systems that validate and operate our hardware across both development and production, working across test automation, lab infrastructure, and hardware coordination. In this role, you’ll own how hardware is exercised end-to-end, ensuring reliable and repeatable performance in demanding environments.

What you'll do 

As a Test and Automation Engineer, your key responsibilities include:

• Designing, developing, and maintaining automated test frameworks for hardware validation and production testing

• Building and maintaining automation for hardware coordination and state control; managing transitions between operational states and integrating with monitoring systems, safety interlocks, and protection mechanisms

• Developing Python-based tooling and test suites to exercise hardware interfaces, including Ethernet, SPI/I2C/Serial, Modbus, SCPI, and custom protocols

• Implementing and maintaining communication with industrial peripherals and test equipment

• Automating lab instrumentation, including oscilloscopes, spectrum analyzers, VNAs, and cable/component testers

• Creating and managing CI/CD pipelines that integrate hardware test results into the broader build and release workflow

• Instrumenting and monitoring test and production infrastructure by collecting metrics, generating reports, and tracking hardware test coverage over time

• Collaborating closely with hardware, RF, and infrastructure engineers to improve system reliability, observability, and testability

Who you are

• Experienced in hardware test automation, production/manufacturing automation, or embedded systems validation

• Strong in Python, with a focus on building clean, maintainable, and scalable automation frameworks

• Hands-on experience communicating with and coordinating industrial devices and peripherals

• Familiar with Ethernet-based systems and protocols (TCP/UDP sockets, network configuration, packet capture/analysis)

• Experienced in automating lab instruments using SCPI, VISA, or vendor-specific APIs

• Comfortable working in Linux environments, including command-line tooling, shell scripting, and service management

• Able to take ownership of systems end-to-end and operate effectively in a highly collaborative, fast-paced environment

Nice to Have

• Experience with RF systems, SDR, or HF communication systems

• Familiarity with Protocol Buffers or similar serialization frameworks

• Experience with CI/CD systems such as Jenkins or Bamboo for hardware-integrated pipelines

• Understanding of network infrastructure concepts such as VLANs, DHCP, PXE/TFTP boot, and SSH tunneling

Who we are

At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get

You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure unmatched anywhere in the industry. We combine our profits across desks, teams and offices into a global profit pool.
• The opportunity to work alongside best-in-class professionals from over 50 different countries.
• 25 paid vacation days in your first year, increasing to 30 from your second year onwards.
• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.
• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.
• Training and continuous learning opportunities, including access to conferences and tech events.
• Competitive relocation packages and visa sponsorship where necessary for expats.

How to apply

Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Please note:

• We do not require any assistance from third-parties including agencies in the recruitment of this role
• We cannot accept applications via email

Diversity statement

Optiver is committed to diversity and inclusion.

Our Linux engineering team ensures that our critical trading servers and infrastructure operate efficiently and reliably across the globe. In a highly customized, bare-metal environment powered by proprietary tools and technology, you’ll help design and implement cutting-edge solutions that enable scalable technological evolution while maintaining peak performance together with speed and precision.

What you'll do

• Designing, deploying, and managing the lifecycle of a large-scale fleet of Linux servers across multiple data centers, ensuring reliability, performance, and scalability.
• Architecting, building, and maintaining systems that drive efficiency and support Optiver’s evolving technology stack.
• Ensuring system reliability by swiftly resolving incidents and optimizing performance to meet trading demands, even during extreme market conditions.
• Researching and implementing new technologies or building enhanced in-house solutions to improve performance and system stability.
• Bridging the gap between hardware and software to ensure seamless interaction and integration.
• Optimizing system and kernel performance, including CPU affinity, NUMA balancing, HugePages, IRQ tuning, and other low-level configurations.
• Developing and maintaining automation tools using Python to enhance system efficiency.
• Monitoring system health and performance using observability tools such as Prometheus, Grafana, and Alertmanager.
• Managing system provisioning and infrastructure deployment using Infrastructure-as-Code tools like Ansible and/or Terraform.
• Joining our rotating support and on-call roster to facilitate global trading operations.

Who you are

• Experience in Linux engineering, debugging, administration, and OS system provisioning

• A solid understanding of networking fundamentals, including TCP/IP, DNS, TCP/UDP/multicast, and packet analysis.

• Hands-on experience with system/network tools such as EBPF, tcpdump, strace, ntp/ptp, lsof, nc.

• Experience with performance tuning at both the kernel and hardware level, including CPU pinning, cache optimizations, and BIOS/UEFI tuning.

• Experience with Linux security hardening techniques.

• Experience managing SAN storages.

• Familiarity with CI/CD pipelines, version control systems (Git), and PR-based workflows.

• Strong experience with monitoring and alerting tools like Elastic, Prometheus, Grafana, and Alert Manager.

• Proficiency in Python for automating operational tasks and system administration.

• Ability to manage large projects, work collaboratively in a team, and communicate effectively to drive technical improvements.

• Willingness to learn new technologies, navigate frequent change, and contribute to a high-performance engineering environment.

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.
• The opportunity to work alongside best-in-class professionals from over 50 different countries.
• 25 paid vacation days in your first year, increasing to 30 from your second year onwards.
• Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.
• Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.
• Training and continuous learning opportunities, including access to conferences and tech events.
  
  

How to apply
Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Please note:

• We do not require any assistance from third-parties including agencies in the recruitment of this role
• We cannot accept applications via email
  
  

Diversity statement
Optiver is committed to diversity and inclusion.

Optiver's Production Engineering teams manage our live trading environment, which is active across 50+ global exchanges and hundreds of thousands of interconnected financial products. Our world-class infrastructure is a combination of vastly distributed systems, high-performance computing and low-latency trading algorithms, as well as high-throughput dataflows and data analysis. To keep pace with the ever-changing markets, Optiver must always react with speed, and therefore takes an in-house approach to building, analysing, managing and improving our custom infrastructure. Taking this autonomy a step further, Optiver's huge volumes of data are stored at our own data centre rather than in the cloud. Our technological independence enables us to evolve our systems on a daily basis, operating with tight feedback loops and quick development cycles. The challenge is balancing innovation with reliability and performance in such a complex, time-pressured environment – and that's exactly where you come in. 

What you'll do
As a Production Engineer, you'll be responsible for deploying, maintaining, monitoring and improving the reliability, scalability and performance of our in-house built trading systems. At Optiver, reliability means prevention and swift resolution across our software, to guarantee optimum functioning even in the most extreme market conditions. Having a decisive nature, engineering mindset and preference for simple solutions are essential to keeping our systems reliable.

The Production Engineer role is crucial for Optiver's trading activities. Your scope will cover market access, monitoring and compliance, strategy evaluation and management, performance tuning and trading automation. Sitting in the middle of our buzzing trading floor, you will have constant face-to-face interaction with end-users (Traders and Researchers as well as fellow Engineers). This is an engineering role, not a support role, so you'll set the standards for our production environment. As part of our core business, you will make a real, direct impact on our ability to trade and trading results. No two days are the same in our high-stakes, flat-hierarchy environment.

Learn more about a day in the life of a Production Engineer (we call this job Application Engineer internally) in this blog post and this video. 

Who you are

• You are a pragmatic, logical thinker.
• With a facilitating and enabling attitude, you always strive to find clean and simple solutions.
• You are naturally curious about hardware and software, and how these interact.
• You want to work on a broad range of projects and use various tools to best solve any problem at hand.
• With a hands-on approach, you can look at code, figure out how it works and explore how to make it better.
• You are able to clearly explain your thoughts through written and verbal communication, ask the right questions, and are not afraid to challenge or defend a strategy. 
• You seek out opportunities to leave your comfort zone and enjoy frequent change.

In terms of skillset, we're looking for:

• Experience managing day-to-day operations of software and hardware infrastructure
• Strong affinity with Unix/Linux systems
• The ability to automate tasks using Python
• Strong design, debugging, and problem solving skills
• Experience with relational databases (e.g. we use PostgreSQL but welcome experience with any other database);
• An understanding of networking fundamentals and protocols.

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure unmatched anywhere in the industry. We combine our profits across desks, teams and offices into a global profit pool
• The opportunity to work alongside best-in-class professionals from over 40 different countries
• 25 paid vacation days and fully paid first-class commuting expenses
• Training opportunities and discounts on health insurance
• Extensive office perks, including breakfast and lunch, world-class barista coffee, sports and leisure activities, Friday afternoon drinks, and weekly in-house chair massages
• Competitive relocation packages and visa sponsorship where necessary for expats
  
  

How to apply
Are you interested in furthering your career on one of the most dynamic and exciting trading floors in Europe?
Apply directly via the form below for the position of Production Engineer. If you have any questions feel free to contact our Recruiter team via our recruitment inquiry form.

Please note:

• We cannot accept applications via email for data protection reasons.
• We do not require any assistance from third-parties including agencies in the recruitment of this role
  
  

Diversity statement
Optiver is committed to diversity and inclusion.

Optiver's Production Engineering teams manage our live trading environment, which is active across 50+ global exchanges and hundreds of thousands of interconnected financial products. Our world-class infrastructure is a combination of vastly distributed systems, high-performance computing and low-latency trading algorithms, as well as high-throughput dataflows and data analysis. To keep pace with the ever-changing markets, Optiver must always react with speed, and therefore takes an in-house approach to building, analysing, managing and improving our custom infrastructure. Taking this autonomy a step further, Optiver's huge volumes of data are stored at our own data centre rather than in the cloud. Our technological independence enables us to evolve our systems on a daily basis, operating with tight feedback loops and quick development cycles. The challenge is balancing innovation with reliability and performance in such a complex, time-pressured environment – and that's exactly where you come in. 

What you'll do
As a Production Engineer, you'll be responsible for deploying, maintaining, monitoring and improving the reliability, scalability and performance of our in-house built trading systems. At Optiver, reliability means prevention and swift resolution across our software, to guarantee optimum functioning even in the most extreme market conditions. Having a decisive nature, engineering mindset and preference for simple solutions are essential to keeping our systems reliable.

The Production Engineer role is crucial for Optiver's trading activities. Your scope will cover market access, monitoring and compliance, strategy evaluation and management, performance tuning and trading automation. Sitting in the middle of our buzzing trading floor, you will have constant face-to-face interaction with end-users (Traders and Researchers as well as fellow Engineers). This is an engineering role, not a support role, so you'll set the standards for our production environment. As part of our core business, you will make a real, direct impact on our ability to trade and trading results. No two days are the same in our high-stakes, flat-hierarchy environment.

Learn more about a day in the life of a Production Engineer (we call this job Application Engineer internally) in this blog post and this video. 

Who you are

• You are a pragmatic, logical thinker.
• With a facilitating and enabling attitude, you always strive to find clean and simple solutions.
• You are naturally curious about hardware and software, and how these interact.
• You want to work on a broad range of projects and use various tools to best solve any problem at hand.
• With a hands-on approach, you can look at code, figure out how it works and explore how to make it better.
• You are able to clearly explain your thoughts through written and verbal communication, ask the right questions, and are not afraid to challenge or defend a strategy. 
• You seek out opportunities to leave your comfort zone and enjoy frequent change.

In terms of skillset, we're looking for:

• Experience managing day-to-day operations of software and hardware infrastructure
• Strong affinity with Unix/Linux systems
• The ability to automate tasks using Python
• Strong design, debugging, and problem solving skills
• Experience with relational databases (e.g. we use PostgreSQL but welcome experience with any other database);
• An understanding of networking fundamentals and protocols.

No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.

Who we are
At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

What you'll get
You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure unmatched anywhere in the industry. We combine our profits across desks, teams and offices into a global profit pool
• The opportunity to work alongside best-in-class professionals from over 40 different countries
• 25 paid vacation days and fully paid first-class commuting expenses
• Training opportunities and discounts on health insurance
• Extensive office perks, including breakfast and lunch, world-class barista coffee, sports and leisure activities, Friday afternoon drinks, and weekly in-house chair massages
• Competitive relocation packages and visa sponsorship where necessary for expats
  
  

How to apply
Are you interested in furthering your career on one of the most dynamic and exciting trading floors in Europe?
Apply directly via the form below for the position of Production Engineer. If you have any questions feel free to contact our Recruiter team via our recruitment inquiry form.

Please note:

• We cannot accept applications via email for data protection reasons.
• We do not require any assistance from third-parties including agencies in the recruitment of this role
  
  

Diversity statement
Optiver is committed to diversity and inclusion.

Optiver leverages technology to solve a variety of complex problems: optimising for scarce bandwidth, responding to market events with nanosecond speed, automatically pricing complex sets of financial instruments with extremely low error tolerance, and analysing huge volumes of data. Our systems are built to add to the stability of the market, not detract from it; therefore they must operate at peak efficiency in the most extreme market conditions. To achieve this, our user interfaces must present coherent, responsive, real-time visualisations of market activity and system performance while providing intuitive control of a highly complex system.  

Our Core Software Engineers focus on the infrastructural and strategic components of our software landscape, ensuring the core elements provide a stable, performant, and trusted foundation upon which our systems are built.

WHAT YOU'LL DO:

Our systems play an essential role in everything we do in the trading domain. That is why our Technology and Trading Teams collaborate closely to jointly explore ideas and establish the new directions. Together, they build and maintain an outstanding suite of reliable, high-performing systems and applications.

As a member of the Core Software Team:

• You will provide the rock-solid software backbone on which the business relies every single day, and will define the technical arena in which the trading-focused development teams continue to innovate.
• You will not only be challenged on your technical knowledge and skills, but also on your capacity for producing simple and elegant solutions in face of an incredibly fast-paced and ever changing business environment.

WHAT YOU'LL GET::

You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.

In addition, you’ll receive:

• A performance-based bonus structure unmatched anywhere in the industry. We combine our profits across desks, teams and offices into a global profit pool.

• The opportunity to work alongside best-in-class professionals from over 40 different countries.

• 25 paid vacation days and fully paid first-class commuting expenses.

• Training opportunities and discounts on health insurance.

• Extensive office perks, including breakfast and lunch, world-class barista coffee, sports and leisure activities, Friday afternoon drinks, and weekly in-house chair massages.

• Competitive relocation packages and visa sponsorship where necessary for expats.

WHO YOU ARE:

• A Software Engineer with a genuine and deep desire to write clean and correct code, combined with a strong interest in delivering architectural and strategic solutions, topped off with a considerable dose of realistic and sustainable pragmatism allowing you to simply get things done
• 4+ Years of experience (doesn't require experience in Finance)
• A solid grasp of computer science, knowing your algorithms, memory and concurrency models, CPU-architecture, operating systems and relational databases etc
• As our main body of software is written in C++ and runs on Linux, you will either need to have extensive experience in this language and platform or be more than willing to learn on the job. Next to C++, we also extensively use Python, C# and other languages in Optiver, and you are therefore expected to be willing and able to learn new languages quickly
• We are looking for both senior and junior brilliant minds. If you feel comfortable with the characteristics outlined above, we strongly encourage you to apply!

WHO WE ARE:

At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.

HOW TO APPLY:

Are you interested in furthering your career on one of the most dynamic and exciting trading floors in Europe?

Apply directly via the form below for the position of Core Software Engineer. If you are selected from your application to proceed to the next round for the position of Core Software Engineer, you will be required to take an online assessment. If you have any questions feel free to contact our Recruitment team via our recruitment inquiry form.

Please note:

• We cannot accept applications via email for data protection reasons.
• We do not require any assistance from third-parties including agencies in the recruitment of this role.

DIVERSITY STATEMENT:

Optiver is committed to diversity and inclusion.

C++ Software Engineer 

At IMC, technology is not a department; it’s at the heart of everything we do. Developed in-house, our innovative software makes millions of trading decisions daily, and we win by making better and faster decisions than our competition.

IMC’s Amsterdam-based C++ Execution development teams work on software that sits directly in the latency-critical loop of our technology stack and touches every part of our organisation. From ensuring our connectivity to the market and handling massive amounts of data, to implementing complex trading algorithms and integrating advanced hardware solutions.

Your Core Responsibilities:

As a software engineer, you’ll work in multidisciplinary teams alongside other engineers as well as traders, researchers, and quants to deliver challenging projects, while taking ownership for end-to-end product development – from requirements gathering to production. You’ll write reliable, high-performance software while balancing time to production with quality and testability. Advanced automated testing and daily deployments will allow you to achieve agile and incremental benefits. Within a complex landscape of varying systems and technologies, you’ll be constantly challenged to consider trade-offs between latency, throughput, simplicity, scalability and maintainability.

• Coding, developing, testing, deploying and maintaining applications and automations for Trading Teams and/or Hardware Development and Execution Teams.
• Working through internal client requests. Gathering details, requirements and feedback from a range of internal stakeholders in order to implement creative automation solutions using innovative coding practices.

Your Skills and Experience:

• Minimum 5+ years professional working experience as a software engineer post graduation
• Strong programming skills in C++. Experience in the latest versions of C++ is highly desirable
• Familiarity with Python scripting
• Familiarity with Docker and Kubernetes
• Comfortable in Linux environments
• Experience gathering business requirements, communicating with key stakeholders and delivering solutions quickly
• The ability to work on greenfield projects under minimal supervision and to take full ownership of the applications you build
• A high degree of flexibility and adaptability: willing and able to deal with uncertainty and ambiguity in a rapidly evolving environment
• Strong troubleshooting and diagnostic skills; ability to solve problems creatively and proactively
• Prior knowledge of trading / capital markets is not required. Curiosity and a willingness to learn is.

Elastic has seen significant growth in its work within the Public Sector over the last few years. This role will focus on delivery but also to lead the stakeholder relationships at the highest levels of Government and to work with them to help align Elastic to their strategic objectives.

You will have the opportunity to work with a tremendous services, engineering and sales team and wear many hats.  This is a critical role, as Consultants have an amazing chance to make an immediate impact on the success of Elastic and our customers.

Given the opportunity and the organisations that you will be working with, you must be a current holder of Security clearance.

What You Will Be Doing:

• Strong customer advocacy, relationship building, and communications skills
• The ability to easily pivot from delivery to strategic engagements with customers
• To work with the wider Elastic organisation to support the customer’s goals, their strategic requirements and their journey with Elastic.
• Ownership of the strategic roadmap with the customer including quarterly strategic sessions with senior and key stakeholders either in one or a number of customers with common goals.
• Solution design, development, and integration of Elastic products and APIs, platform architecture, and capacity planning in mission-critical environments
• Comfortable working remotely in a highly distributed team
• Development of demos and proof-of-concepts that highlight the value of the Elastic Stack
• Data modelling, query development and optimisation, cluster tuning and scaling with a focus on fast search and analytics at scale
• Solving our customers’ most challenging data problems
• Working closely with the Elastic engineering, product management, and support teams to identify feature enhancements, extensions.
• Engaging with the Elastic Sales team to scope opportunities while assessing technical risks, questions, or concerns

What You Bring Along:

• Hands-on experience and an understanding of Elasticsearch and/or Lucene
• Minimum of 2 years’ experience as a Software Engineer, System Administrator, or DevOps Engineer
• Minimum of 5 years' experience working as a Consultant, working to deliver and execute on professional services engagements
• Currently holding  security clearance
• Experience as a technical instructor or public speaker to large audiences on enterprise infrastructure software technology to engineers, developers, and other technical positions
• Excel at working directly with customers to gather, prioritise, plan and execute solutions to customer business requirements as it relates to our technologies
• Understanding and passion for open-source technology and knowledge and proficient in at least one programming language
• Hands-on experience with large distributed systems from an architecture and development perspective
• Knowledge of information retrieval and/or analytics domain
• The nature of the work that you will be doing will require a high percentage of work onsite with customers, and you should be expected to travel as a result of this requirement
• Understanding of Linux, Java and databases

Bonus Points:

• Deep understanding of Elasticsearch and Lucene, including Elastic Certified Engineer certification
• BS, MS or PhD in Computer Science or related engineering discipline
• Strong knowledge of Java and Linux/Unix environment, software development, and/or experience with distributed systems
• Experience and interest in delivering and/or developing product training
• Experience contributing to an open-source project or documentation

LI-PF1

Elastic has seen significant growth in its work within the Public Sector over the last few years. This role will focus on delivery but also to lead the stakeholder relationships at the highest levels of Government and to work with them to help align Elastic to their strategic objectives.

You will have the opportunity to work with a tremendous services, engineering and sales team and wear many hats.  This is a critical role, as Consultants have an amazing chance to make an immediate impact on the success of Elastic and our customers.

Given the opportunity and the organisations that you will be working with, you must be a current holder of Security clearance.

What You Will Be Doing:

• Strong customer advocacy, relationship building, and communications skills
• The ability to easily pivot from delivery to strategic engagements with customers
• To work with the wider Elastic organisation to support the customer’s goals, their strategic requirements and their journey with Elastic.
• Ownership of the strategic roadmap with the customer including quarterly strategic sessions with senior and key stakeholders either in one or a number of customers with common goals.
• Solution design, development, and integration of Elastic products and APIs, platform architecture, and capacity planning in mission-critical environments
• Comfortable working remotely in a highly distributed team
• Development of demos and proof-of-concepts that highlight the value of the Elastic Stack
• Data modelling, query development and optimisation, cluster tuning and scaling with a focus on fast search and analytics at scale
• Solving our customers’ most challenging data problems
• Working closely with the Elastic engineering, product management, and support teams to identify feature enhancements, extensions.
• Engaging with the Elastic Sales team to scope opportunities while assessing technical risks, questions, or concerns

What You Bring Along:

• Hands-on experience and an understanding of Elasticsearch and/or Lucene
• Minimum of 2 years’ experience as a Software Engineer, System Administrator, or DevOps Engineer
• Minimum of 5 years' experience working as a Consultant, working to deliver and execute on professional services engagements
• Currently holding  security clearance
• Experience as a technical instructor or public speaker to large audiences on enterprise infrastructure software technology to engineers, developers, and other technical positions
• Excel at working directly with customers to gather, prioritise, plan and execute solutions to customer business requirements as it relates to our technologies
• Understanding and passion for open-source technology and knowledge and proficient in at least one programming language
• Hands-on experience with large distributed systems from an architecture and development perspective
• Knowledge of information retrieval and/or analytics domain
• The nature of the work that you will be doing will require a high percentage of work onsite with customers, and you should be expected to travel as a result of this requirement
• Understanding of Linux, Java and databases

Bonus Points:

• Deep understanding of Elasticsearch and Lucene, including Elastic Certified Engineer certification
• BS, MS or PhD in Computer Science or related engineering discipline
• Strong knowledge of Java and Linux/Unix environment, software development, and/or experience with distributed systems
• Experience and interest in delivering and/or developing product training
• Experience contributing to an open-source project or documentation

LI-PF1

Graviton Research Capital (GRC) is a Singaporean trading firm, specialising in quantitative algorithmic strategies which are deployed on markets across the globe.

In 2026, GRC established a Research and Development arm within the Netherlands, which is seeking 2x Quantitative Research Interns to work closely with a Senior Quantitative Researcher in Amsterdam. 

Successful candidates will work on projects that directly impact the team’s research on financial markets. Candidates will gain exposure to a range of concepts and techniques, including time series analysis, filtering, stochastic models, pattern recognition and statistical inference, gained through the analysis of terabytes of data. This is a unique opportunity to gain exposure to a small team within a growing Quantitative Research function!

About the role: 

• 10 week summer internship (June - August 2026) 
• Based in Amsterdam 

Requirements: 

• A quantitative focused degree, such as Mathematics, Statistics, Data Science, Econometrics, Machine Learning (or related fields) 
• A working knowledge of Linux/Unix
• Programming experience, preferably in C++ or Python
• No prior knowledge of financial markets is needed but must have a strong interest in learning about financial markets
• Have a strong work ethic
• Entrepreneurial spirit

Successful candidates will be considered for future graduate and postgraduate positions.

Apply Now! 

If you’re up for the challenge, submit your CV! 

Please only apply to one of our Job Postings. At the bottom of the application questions below you'll have the option to indicate if there are any other roles here at Radix that you might be interested in. Please do not submit multiple applications for different positions.  

As a DevOps Engineer your goal is to enhance live trading systems, research infrastructure, and alpha generation through technology innovation. Our DevOps team is specifically responsible for ensuring efficacy of our trading machines and the translation of research to production. The ability to execute in a fast-paced environment is crucial for this team, as you’ll be manipulating Linux on the fly, identifying errors and inefficiencies quickly and designing solutions to challenges with systems, networking, and general architecture on a daily basis. 
 
We leverage cutting-edge software and hardware to push production level code daily and evolve fully-automated strategies, alpha generation processes, live trading systems, and machine learning research and simulation infrastructure used to analyze petabytes of data. 
 
We provide starter projects that we know will add value to the firm, while encouraging exploration and independent projects to improve inefficiencies, propose iterations, and own significant processes and tools within your first few months. 
 
COMPENSATION – Competitive salary, plus quarterly bonus based on individual performance and contribution towards success of others and the firm.
 
Qualifications
 
We’re looking for highly analytical people who want to help build the research-driven trading firm of the future. And to do that, you’ll need the following qualities:

• Python; awareness of strength in particular language and ability to solve more complex problems due to understanding nuances of the language
• Persistent Drive to Improve - Do you have an innate desire to rise to the next level, even after great accomplishments?
• Creative Problem Solving and Probabilistic Thinking - You must enjoy learning and implementing new concepts quickly, combining knowledge from different domains to create new ideas, and take a data-driven and probabilistic approach to testing and implementing new ideas.
• Team Mindset - We want people who understand 1+1 > 2 and are as committed to making the team better through sharing ideas as they are driven to improve their individual performance.
• Mental Flexibility & Self Awareness - You’ll have to frequently adapt based on new data, results, and feedback on your ideas and performance.
• Orientation for Making Money - Although we value academic training, our work is not an academic exercise. We take a hacker’s approach to testing ideas, dropping projects that consume time without high upside, and focusing our next efforts on what will create the most value for the firm.

Software development skills to have or develop

• Understanding of data structures, algorithmic complexities, and numerical algorithms
• Systems Architecture - knowledge and experience with distributed systems, communication, and HPC systems 
• Software Architecture - knowledge and experience working with a large code base
• Development Processes - experience delivering and deploying software in production environments

This is Adyen

Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. 

For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster.

Senior Security Detection and Monitoring Engineer

As a driven and proactive Senior Security Detection and Monitoring Engineer you will focus on Security Operations, Detection Engineering, Threat Detection and Incident Response. You will develop and maintain security solutions to improve detection capabilities within the whole Adyen ecosystem, automate difficult manual tasks and investigate security incidents.  In short, we want you to build and operate a highly effective security detection and response system! 

How do we do that?

• Collaborating: To create meaningful detections and to respond to triggered alerts you will collaborate with other members of the security, product, development and infrastructure teams. We do not work in isolation.
• Developing our very own tool: You will implement complex detection logic in our in-house developed security monitoring tool with a mix of Python and your bright ideas. Advanced Python development skills are a must,  “a bit of scripting” is not enough for the challenges we have ahead of us.
• Operating our very own tool: all our security engineers developing new detections also act as security analysts and incident responders dealing with the alerts triggered by the monitoring system. We do not believe in the typical task segregation of traditional security operation centers. Do you agree with this view? Tell us why - or challenge us -  in your motivation letter! 

What you’ll do

• Create scalable and actionable detection logic for emerging threats in Python
• Develop new solutions to hunt, detect and deal with threats
• Operate and expand our in-house built security event monitoring tool
• Save your colleague’s time and brainpower through automation
• Maintain up to date knowledge of tools, techniques, and procedures used by attackers
• Bring and execute on state-of-the-art initiatives that help this domain be ahead of the market
• Build and own security monitoring tooling in Adyen
• Join the Security On Call group rotation

Who you are

• You have 4+ years of experience in one or more of the following security domains: Intrusion Detection, Detection Engineering, Threat Detection, Incident Response.
• You are proficient in two or more of the following areas:  Operating System security (Linux/MacOS), Container Security, Network security, SaaS/IaaS Security.
• You understand security detection and monitoring without being limited to specific SIEM tools or vendors.
• You have solid and demonstrable experience with Python, and are able to translate complex detection logic into advanced code with ease.
• You are a builder at heart, and have the mindset to script, automate, and scope projects to avoid repetitive tasks.
• You believe that the security of systems, people and processes requires a pragmatic and humane approach where communication is key.
• You have pioneered a solution in uncharted territory, setting a new standard for your team

Our Diversity, Equity and Inclusion commitments 

Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen. 

Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application!

What’s next?

Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 5 business days. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role. Learn more about our hiring process here. Don’t be afraid to let us know if you need more flexibility.

This role is based out of our Amsterdam office. We are an office-first company and value in-person collaboration; we do not offer remote-only roles.