The role

We’re looking for a Software Engineer with strong C++ expertise to join the team building and operating Nebius Data Platform — a distributed storage and a processing platform that acts as the company’s “source of truth” and the backbone of many internal (and some external) products.

Nebius Data Platform is a single multi-tenant ecosystem based on YTsaurus — instead of running separate HDFS/Kafka/HBase-style systems, we provide storage, compute, and analytics capabilities inside one platform.

Built on top of the open-source YTsaurus ecosystem, we run and extend our own Nebius distribution and develop significant in-house functionality (core and platform-level). We can design, implement, and roll out features end-to-end on our clusters without waiting for upstream approvals and contribute upstream when it makes sense.

At scale today, this includes~500 servers, ~20k CPU cores and ~10 PB of compressed data in our largest production cluster, supporting workloads ranging from business-critical pipelines and financial transactions to large-scale ML/LLM training datasets and compute.

What’s inside the platform

You’ll work on a system that includes (and ties together):

• Distributed Storage (Cypress): transactional semantics, tiered storage, erasure coding, replication, and strong reliability expectations.
• Compute & ETL: a cluster-wide job scheduler (tens of thousands of cores), MapReduce, YQL for SQL-like data processing, and SPYT (Spark over YTsaurus) for modern data engineering.
• Interactive analytics (CHYT): ClickHouse® instances spun up directly on compute nodes for fast SQL over data in-place.
• Dynamic Tables: low-latency NoSQL KV with distributed ACID transactions for OLTP-style workloads and feature stores.
• Orchestracto: workflow orchestration deeply integrated with the platform (Airflow-like, but platform-native).

What you’ll do

We’re looking for engineers who combine strong systems skills with product sense: understanding who uses the platform, why certain capabilities matter, and making pragmatic trade-offs to maximize impact. On our team, engineering work is expected to be connected to real users and outcomes — you’ll regularly align with internal stakeholders, clarify requirements, and help drive prioritization.

In this role, you will:

• Design and implement new functionality in YTsaurus core (C++) with production reliability in mind.
• Build and evolve platform-level capabilities: platform architecture and operating model—multi-cluster growth, shared primitives, and a consistent experience that scales with new teams and use cases.
• Improve end-to-end platform experience for internal (and external-facing) users: APIs, guardrails, debugging workflows, and automation.
• Own production quality: incident response / on-call rotation, root cause analysis, and turning learnings into durable fixes.

Example projects

• Roll out sharded YTsaurus masters (incl. Kubernetes operator support) and build automatic balancing of metadata across master cells (consensus groups) to remove control-plane bottlenecks and unlock 10–100x cluster growth.
• Make CHYT interactive SQL faster and more predictable at high load via performance work like data-skipping / min-max-style indexes and improved execution introspection.
• Turn Orchestracto into a platform product by defining the building blocks, developer experience, and governance for how teams create and share workflows.
• Scale and harden Parquet-on-S3 for native YTsaurus workloads by tackling replication/movement, consistent lifecycle semantics, and master-server metadata optimizations for performance and reliability.
• Design and ship complete, trustworthy audit trails for data changes (who/what/when) across heterogeneous storage and compute paths.

Tech stack

• Core: modern C++ (C++20, async + multithreaded primitives)
• Services & tooling: Go and Python (microservices, utilities, integration tests)

What we expect

• 5+ years of software engineering experience.
• Strong C++ skills (you’ll write core code).
• Working knowledge of Python and/or Go (you don’t have to be expert, but should be comfortable navigating them).
• Experience developing and/or operating high-load, distributed services.
• Production mindset: ability to use SSH, read logs/metrics/traces, and debug distributed systems behavior.
• Solid CS fundamentals: algorithms, data structures, concurrency basics.

Nice to have

• Experience with Big Data systems (YTsaurus/Hadoop/Spark/ClickHouse/Kafka-like ecosystems).
• Experience with multi-tenant platforms, schedulers, resource isolation, quotas, and reliability engineering.
• Strong performance engineering skills (profiling, lock contention, latency/throughput tradeoffs).

We conduct coding interviews as part of the process.

Your Mission 

Your main objective will be to design, develop, and integrate our in-house software used to process, visualize, and analyze test, launch, and flight data. The software you develop empowers our engineering and operations teams to work with live and post flight data of the vehicle prior, during, and after take-off. 

More specifically, you will: 

• Build and maintain complex web applications
• Create applications to allow the monitoring of real time data with different types of visualization
• Develop on top of design systems and create libraries to allow reusing their components
• Improve general performance and responsiveness
• Author technical and user documentation
• Contribute on architectural decisions based on trade off analysis
• Guide less experienced engineers sharing your knowledge and know-how 

Who you are and what you have 

• Strong understanding and at least 3 years of hands-on experience in TypeScript 
• Practical experience in at least one major front-end framework (preferably React)
• Highly proficient with high frequency scientific data (e.g., time series, frequency domain) live visualization and charting
• Hands-on experience designing microservices architecture and API design
• Experience with automated software testing (unit tests, functional tests, etc.), especially with Cypress or Playwright
• Experience with CI/CD (preferably in GitLab)
• Experience with message based streaming technology (preferably Apache Kafka) 

Nice to Have (Optional): 

• Experience working with Redux and MobX
• Experience with styled-components, tailwind or another major CSS framework
• Experience with storybook for component library development
• Engineered RESTful and WebSocket-based applications using Java and Spring Framework.
• Developed RESTful services within the C#/.NET ecosystem.
• Understanding of infrastructure, cloud services and network
• Experience with the Aerospace Engineering domain use cases 

Benefits 

• Employee Participation Program: Share in our success through our virtual company share program
• 30 days of vacation: Enjoy the days off to relax and recharge
• Company pension plan: Secure your future with our company pension plan, featuring a 20% employer contribution after the probation period
• Subsidised lunch: Stay energised with delicious, subsidised lunches every day
• Public transport ticket: Commute with ease using a fully financed Deutschlandticket
• Sport Clubs membership: Stay fit with our sponsored sports club memberships (EGYM Wellpass)
• Individual learning allowance: Grow your skills with an individual learning budget granted after the probation period
• Childcare allowance: Receive a childcare allowance for your non-school-age children
• And Much More! Discover additional perks and benefits when you join our team        

Who we are

We are Isar Aerospace and we are at the forefront of New Space building a modern space business to enable faster, better and cheaper access to space.

Our mission is to help democratise space and use it for good in order to improve life on Earth now and for the future generations.

We are a fast-growing company aiming to provide sustainable and environmentally friendly launch solutions for small and medium-sized satellites and constellations into Low Earth Orbit. The company is privately funded by world-leading technology investors with strong commitment and support and our team is made of driven and talented people with a real passion for space innovation.

We're making rockets in a way that hasn't been done before disrupting a traditional industry. If you are up for the challenge, want to work on cutting-edge projects and be part of a team changing the world for better, come, join us and launch your career!

Want to find out more about us?

Visit www.isaraerospace.com

Data Protection

We process your personal data for the purpose of managing the recruitment process and assessing your application. For detailed information on how your data is processed, including your rights, please refer to our Privacy Policy.

Disclaimer

Isar Aerospace SE is an equal-opportunity employer committed to fairness and inclusivity. We do not prioritize any specific religion, gender, nationality, or background. Due to security clearance requirements, affiliations with countries listed under § 13 para. 1 no. 17 SÜG may affect the application process. All qualified applicants are encouraged to apply.

Senior Frontend Engineer (Angular) – Greenfield Product

Castle Tech GmbH – Berlin or Munich (Hybrid)

We are building a new standalone product from the ground up and are looking for a Senior Frontend Engineer to help shape it.

This is a high-impact role where you will influence system design, architecture, and product direction from day one. You will work closely with product and engineering to turn ideas into production-ready software while setting the foundation for how the system evolves.

If you enjoy building products from scratch, designing clean architectures, and taking ownership of meaningful projects, this role will allow you to make a real impact.

What You’ll Work On

• Build a new production-grade product from the ground up

• Design and implement a scalable frontend architecture using Angular and TypeScript

• Take ownership of features from concept to deployment

• Collaborate closely with product managers, designers, and backend engineers

• Contribute to technical architecture and system design decisions

• Help establish development standards, CI/CD pipelines, and engineering best practices

• Mentor other engineers through code reviews and technical feedback

• Continuously improve development workflows using modern tools and AI-assisted engineering

AI-Augmented Engineering

AI is part of how we work. We expect engineers to actively use modern AI tooling to improve productivity and quality.

You should be comfortable:

• Using AI-assisted development tools in your daily workflow

• Writing effective prompts and evaluating AI-generated output critically

• Identifying AI limitations and failure modes

• Exploring modern AI workflows and tools

This is not about blindly accepting AI suggestions — it’s about using AI thoughtfully to work smarter and build better systems.

Your Skills

Must Have

• 5+ years of experience as a frontend engineer

• Strong expertise with Angular (v11+) and TypeScript

• Experience designing scalable frontend architectures

• Strong understanding of software design principles and maintainable systems

• Experience with modern frontend tooling (NPM, Webpack or esbuild)

• Experience working with Git, CI/CD pipelines, and Docker

• Experience working in agile teams (Scrum or Kanban)

• Strong communication skills in English

Nice to Have

• Experience with frontend testing frameworks (Jest, Cypress, Playwright)

• Experience building greenfield products or new platforms

• Familiarity with AI-related components such as RAG or vector databases

• Experience with Material Design or product-oriented UI development

• Conversational German

What You’ll Own

As a Senior Engineer, you will play an important role in shaping both the technology and the team.

You will:

• Design systems with clear component boundaries and scalability in mind

• Identify technical risks and propose practical solutions

• Help improve the team’s engineering standards and productivity

• Mentor other engineers and contribute to technical decision-making

• Deliver high-impact features that support business and product goals

Why Join Castle Tech?

• Build something new – work on a greenfield product from the start

• Real technical ownership – influence architecture and system design

• Modern engineering environment – use the latest tools and workflows

• Flexible hybrid work – office and remote options in Berlin or Munich

• Your gear, your choice – MacBook or Windows setup with the tools you need

• Growth and development – structured onboarding, feedback cycles, and coaching

• Collaborative team – ambitious engineers who enjoy building great products

If you're excited about building a new product, shaping architecture, and working with a modern engineering team, we’d love to hear from you.

We're building an AI copilot for web testing automation. It enables manual and automation QA engineers to turn their manual testing flows into production-ready automated E2E testing scripts, saving hours of manual work and coding. We are a small team with zero bureaucracy, focusing on real users. We optimize for shipping value - not hype.

About the role:

You'll own the top of the funnel: outbound, qualification, and getting leads to sit down for a conversation. Demos, onboarding, and retention are staying with the founder for now.

Phase one: Get individual Automation QAs to try the product, aiming for fast adoption and no procurement. Once we hit 20+ weekly users, we’ll move on to phase two, where we’ll shift the focus to B2B – qualified meetings with QA Leads and Engineering Managers.

Your focus in the first three months:

• Build targeted lists: Automation QAs at companies with web products and Playwright, Cypress, or Selenium in their stack.
• Run outbound sequences (LinkedIn is the baseline, but you decide the channels). A/B test weekly.
• Design qualification gates (forms and scoring) to filter leads before the founder calls.
• Reach 20+ weekly active users after month one – ICP-qualified and giving direct feedback to engineering.
• Document what works into a repeatable playbook.

Growth path:

This role expands as your strategies deliver results. Once the user pipeline works, you can take over demos and run B2B sales end to end. From there, the natural next step is Growth Lead (funnel optimization and scaling the playbook) or Account Executive (owning deal execution).

Why to join:

• You'll be building a strategy that scales the product, not filling a quota. What you create from scratch becomes the foundation.
• Your outreach turns into users who talk directly to engineering, and their feedback ships as features within days.
• AI for developer tools is a market with real pull, and QA automation is one of its sharpest pain points.
• We’re backed by JetBrains – financially secure with no reliance on external VC funding.

Who we're looking for:

You should have a high level of agency and be quant-minded – you live in funnel metrics, run experiments, and are comfortable saying "no" to leads that are a bad fit. 

The ideal candidate will:

• Have done 0-to-1 outbound for an early-stage devtool, QA tool, infrastructure product, or similar.
• Have proven cold outbound results, instead of being dependent on warm inbound.
• Be able to talk credibly about flaky tests, CI pain, and Playwright vs. Cypress. You don't need to be an engineer, but you do need domain empathy.
• Possess strong written communication skills, with the ability to craft short, sharp messages that get replies.

Nice to have:

• A QA or SDET background – you've felt the pain yourself before moving to sales or BD.
• Exposure to security/compliance objections – enough to pre-empt and route.
• Content skills – your LinkedIn posts get engagement, not just your DMs.
• Experience as one of the first 10 employees at a startup.

#LI-REMOTE 
#LI-KT1

About the job

The world’s most critical--and at risk--business applications have been neglected for far too long. Onapsis eliminates this blind spot by providing cybersecurity solutions dedicated to business-critical applications. Whether running on-premises, in the cloud, or a hybrid environment, Onapsis helps nearly 30% of the Forbes Global 100 understand the threats and risks across their SAP and Oracle landscapes.

We are looking for self-motivated and enthusiastic Software Engineer in Test who wants to make an impact in the cybersecurity space by continuing to advance, maintain, and enhance our platform features in the areas of application security testing for SAP applications, including the ability to review third-party custom code and transports, and automatic remediation for common code errors.

What you will be doing, your legacy: 

Working with leadership, product management, engineering, and the Onapsis research team. You will design, implement, and execute test procedures to ensure software features work as intended. Focused on automation and advancing automation capabilities, you will also design, build, and use test automation and build automation to ensure our software always fulfills business solution requirements to protect our customers. Work collaboratively as part of a software engineer team aligned with cybersecurity researchers and product managers to iterate toward product definition and realization. Additionally, you will be working with the Architecture team to take the platform to the next level of maturity in terms of technologies, quality, and architecture design while advancing our quality engineering processes to deliver high-quality products and services.

Requirements:

• 2+ years of professional software engineering experience
• 2+ years of programming experience with Python, Java and or JavaScript
• Bachelor’s Degree in Systems Engineering, Computer Science or related field, or relevant work experience.
• Experience with test automation frameworks such as Cypress or Selenium. 
• Experience with tracking and testing tools, including Test Case Management, Project
• Planning Tools and Issue Tracking
• Experience with databases, ORM frameworks (e.g., Hibernate), and building automation tools such as Ant and Maven
• Experience testing APIs (REST, GraphQL) with tools such as Postman
• Experience developing in Linux environment
• Knowledge of test-driven development (TDD), CI / CD tooling, and Agile methodologies
• Experience troubleshooting production environments using observability and monitoring tools

Desired skills or interests in:

• Container technology, i.e., Docker, Kubernetes
• Security software development best practices
• Cloud-native application development and Cloud Technologies 
• Knowledge of test-driven development (TDD), CI / CD tooling, and Agile methodologies
• Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
• Experience with distributed computing and enterprise-wide systems
• Experience in communicating with users, other technical teams, and senior management to collect requirements, describe software product features, technical designs, and product strategy
• Experience influencing software engineers' best practices within your team

What we offer: 

• A role in shaping the future of protecting the most critical applications that run the world's business and a career that grows as the company grows.
• A unique culture of high achievement and teamwork.
• Supportive and humble colleagues are the space's top problem solvers and innovators.
• Financial security through competitive compensation and incentives.

Location:

The location for this role is Heidelberg. This is a hybrid role, so candidates must be commutable to Heidelberg.

About Onapsis:

Onapsis protects the business applications that run the global economy. The Onapsis Platform delivers vulnerability management, change assurance, and continuous compliance for business applications from leading vendors such as SAP, Oracle, and others. The Onapsis Platform is powered by the Onapsis Research Labs, the team responsible for the discovery and mitigation of more than 1,000 zero-day vulnerabilities in business applications.

Onapsis is headquartered in Boston, MA, with offices in Heidelberg, Germany and Buenos Aires, Argentina, and proudly serves hundreds of the world’s leading brands, including close to 30% of the Forbes Global 100, six of the top 10 automotive companies, five of the top 10 chemical companies, four of the top 10 technology companies, and three of the top 10 oil and gas companies.

For more information, connect with Onapsis on LinkedIn or visit https://www.onapsis.com.

#LI-AC1

#LI-Hybrid

QA Engineer II

Bulgaria(Remote)

About LivePersonLivePerson stands at the forefront of conversational AI and digital customer engagement, redefining how businesses interact with their customers. Its flagship innovation, the Conversational Cloud®, empowers AI-driven dialogues for some of the world's most renowned brands, enabling seamless connections across messaging, voice, and digital platforms.

Every month, LivePerson orchestrates nearly a billion conversational interactions, amassing one of the industry's largest conversational datasets. This remarkable scale enhances the precision, personalisation, and automation of its AI models, elevating the standards of customer engagement.

In 2025, LivePerson experienced unprecedented growth in the AI landscape, earning accolades as a Leader in multiple G2 Grid® reports, including categories such as AI Agents, Agentic AI, Chatbots, and Customer Service Automation. This pivotal year also marked the company's first inclusion in the prestigious Gartner Magic Quadrant™ for Conversational AI Platforms, solidifying its reputation as a trusted enterprise AI provider.

As the landscape of generative AI evolves and new capabilities in LLM integration and autonomous agents emerge, LivePerson remains committed to innovation. The company continually pioneers advancements in intelligent automation, agent-assist tools, predictive insights, and scalable enterprise AI deployments, ensuring it stays at the cutting edge of customer engagement solutions.

You will: 

• Design and execute comprehensive test plans and test cases for both UI and Backend components.
• Perform UI testing (functional, regression, smoke, exploratory) across web and mobile platforms.
• Conduct Backend testing, including API validation, microservices testing, workflow verification, and data integrity checks.
• Lead exploratory testing sessions using structured techniques to uncover edge cases and high-risk defects.
• Review user stories and acceptance criteria to ensure clarity, completeness, and testability before development begins.
• Apply risk-based testing to prioritise not only critical functionality but also high-risk edge cases, complex integrations, and areas with a higher likelihood or impact of failure.
• Collaborate with Product and Engineering to identify requirement gaps early and improve overall product quality.
• Identify, document, and track defects with clear, reproducible steps and ensure timely resolution.
• Participate actively in test planning, estimation, and test coverage discussions to ensure strong release quality.
• Maintain clear documentation of test progress, results, and coverage metrics.
• Own quality for specific product areas, contributing to release readiness and go/no-go recommendations.
• Help enhance QA processes and contribute to increasing automated test coverage across UI and Backend.
• Stay current with QA tools, trends, and industry best practices.

You have:

• 4+ years of experience in QA, with hands-on UI and Backend manual testing.
• Strong understanding of QA methodologies, test planning, test strategy, and test coverage principles.
• Proven ability to write high-quality test plans, test cases, and exploratory test charters.
• Expertise in functional, regression, smoke, negative, and exploratory testing across UI and backend systems.
• Experience with API testing tools such as Postman.
• Ability to perform basic SQL queries or data validation for backend testing.
• Skilled in analysing requirements, identifying ambiguities, and ensuring testability.
• Familiarity with Jira or similar test/defect management tools.
• Strong analytical and problem-solving skills with attention to detail.
• Excellent communication skills and collaboration across cross-functional teams.
• Ability to mentor junior QA team members and contribute to QA best practices.
• Foundational understanding of automated testing concepts and interest in supporting automation initiatives.
• Some of the good-to-have qualifications
• ISTQB or equivalent certification.
• Experience with automation tools such as Playwright, Cypress, Nightwatch, and Selenium.
• Familiarity with CI/CD systems (e.g., GitLab).
  Knowledge of Java or JavaScript.

Benefits: 

• Time away: Vacation, public holidays, and care days.
• Financial: Pension, deferred pension, and ESPP.
• Family: Parental leave.
• Development:  Generous tuition reimbursement and access to internal professional development resources.
• Additional: Exclusive perks and discounts.
• #LI-Remote

Why you’ll love working here: 

At LivePerson, we take pride in being at the forefront of enterprise conversational AI. We truly celebrate the rich tapestry of diverse thoughts, experiences, and backgrounds that inspire our innovation. Here, your individuality isn't just welcomed — it’s cherished. You’ll embark on a journey of continuous growth, make a profound global impact, and be empowered to craft your own unique success story.

We are honoured to be recognised by Fast Company, Newsweek, and BuiltIn as one of the most innovative, people-centric, and remote-friendly workplaces. Join us and be part of something extraordinary!

Belonging at LivePerson:

At LivePerson, we take pride in being an equal-opportunity employer, devoted to cultivating a vibrant and inclusive environment where everyone feels valued and empowered. We wholeheartedly welcome all qualified applicants to join our team, regardless of age, ancestry, race, colour, gender identity or expression, marital status, medical condition, national origin, disability, protected veteran status, religion, sex (including pregnancy), sexual orientation, genetic information, or any other protected status.

We also embrace diversity by considering qualified applicants with criminal histories in line with applicable laws. 

If you need reasonable accommodations during the application or hiring process, we encourage you to reach out to your recruiting contact as early as possible. Your success matters to us, and we are here to support you every step of the way.