Company Description

ecosio is a fast-growing, innovative service company and a leading provider of B2B integration, specialising in electronic data interchange (EDI), Web EDI and e-invoicing. ecosio is part of Vertex, Inc., a leading global provider of indirect tax solutions listed on Nasdaq (VERX).

Our brand slogan is Connections That Work as we believe strong connections are central to successful business relationships - both external and internal. At ecosio, we hire individuals from all backgrounds and are committed to creating an inclusive work environment. We are technology lovers, set the highest standards for our solutions, and put innovative ideas first.

Job Description

As a Senior Pentester / Red Teamer, you will operate as a highly autonomous security specialist responsible for proactively identifying vulnerabilities, simulating real-world attack scenarios, and hardening our infrastructure and applications. You will design and execute offensive security engagements — including penetration tests, red team exercises, and threat hunting campaigns — across cloud-native and hybrid environments. A core part of your mandate is to build and maintain automated security testing pipelines, leveraging AI-assisted tooling to continuously assess and improve the organisation's security posture.

You'll connect with the role if you enjoy...

• Plan and execute penetration tests against internal and external infrastructure, web applications, APIs, and cloud environments (primarily AWS)
• Conduct red team engagements simulating advanced persistent threats (APTs) and real-world attack chains
• Design, build, and maintain automated pentesting and security scanning pipelines integrated into CI/CD workflows
• Leverage AI and machine-learning–based tools (e.g., LLM-assisted vulnerability discovery, automated exploit generation, AI-driven anomaly detection) to scale offensive security operations
• Develop custom exploit code, scripts, and tooling tailored to the organisation's technology stack
• Assess and harden Kubernetes and AWS environments (IAM, VPC, EKS, Lambda, S3, CloudTrail, GuardDuty, etc.)
• Document findings in clear, actionable reports with risk ratings and remediation guidance
• Collaborate with SOC, DevOps, and engineering teams to validate fixes and improve detection capabilities
• Contribute to purple team exercises bridging offensive findings with defensive improvements
• Stay current on emerging attack techniques, CVEs, threat intelligence, and offensive security research
• Mentor junior security team members on offensive methodologies and tooling
  
  

Qualifications

To connect with ecosio it is important to have…

• 5+ years of hands-on experience in penetration testing, red teaming, or offensive security roles in Cloud environments
• Proven track record of security assessments in AWS environments (IAM misconfigurations, privilege escalation, serverless exploitation, container breakouts)
• Deep understanding of OWASP Top 10, MITRE ATT&CK, and common exploit frameworks (Metasploit, Cobalt Strike, Sliver, etc.)
• Strong proficiency in scripting and automation (Python, Bash, Go, or similar)
• Strong proficiency in subject matter tools e.g. Pacu or Prowler
• Solid knowledge of networking, operating systems (Linux/Windows), and cloud-native architectures
• Familiarity with AI/ML-assisted offensive security tools and techniques
• Excellent analytical thinking and ability to work independently with minimal supervision
• Strong written and verbal communication skills for technical and executive reporting

And nice to have...

• Relevant certifications such as OSCP, OSEP, OSCE, CRTO, GPEN, GXPN, or AWS Security Specialty
• Experience with Kubernetes / EKS security assessments and container escape techniques
• Experience in physical pentesting of hardware devices such as firewalls, wifi aps and contactless card readers
• Background in malware analysis, reverse engineering, or exploit development
• Hands-on experience with AI-powered pentesting frameworks (e.g., PentestGPT, Nuclei AI, custom LLM agents for recon/exploitation)
• Contributions to open-source security tools or published security research / CVEs
• Experience with threat intelligence platforms and adversary emulation frameworks
• Familiarity with compliance frameworks relevant to offensive testing (ISO 27001, NIS2, SOC 2)

Additional Information

By connecting with us you will experience...

• Our remote-first culture lets you work remotely from one of our designated countries
• Flexible working hours to suit your schedule and priorities
• Annual personal development budget to invest in conferences, courses, or career coaching
• Access to training and learning paths from Datadog and CrowdStrike
• Home office allowance to create a workspace that fits your needs
• Regular events and trips to connect, celebrate, and have fun with the team
• Workations of up to 90 days per year within the EU, combining travel and productivity
• Wellbeing support, including mental health resources and employee assistance programs
• Additional country-specific benefits based on your location

Sounds like a connection that works? Then apply now and we will get in touch soon!

As part of our hiring process at ecosio, we conduct standard background checks. You can find more information about them by clicking HERE.

Our mission is to build Connections That Work by fostering a diverse and inclusive team. We are committed to making everyone feel valued and empowered to contribute their unique skills, experiences and perspectives. And now we want to connect with you

Job Title: Full Stack Software Engineer 
Employment Status: Full-time
Location: Vienna, Austria - Hybrid (preferred) or Remote - EU
Compensation: competitive compensation + performance-based bonus and equity options.
Final compensation is negotiable based on experience and qualifications.
Benefits: free in-office: lunch, drinks, coffee, snacks, Wiener Linien ticket, a yearly company retreat, regular team events

Job Summary

At Ketryx, we’re on a mission to help medical software teams build secure, reliable applications that make a real difference in people’s lives. We give them the tools to automate the tough parts of compliance and quality so they can focus on what matters most: creating life-saving products with confidence.

We're currently hiring across multiple levels for experienced Full Stack Engineers (mid-level to senior) to join our team. In this role, you’ll work on both the frontend and backend of our platform, helping medical device companies get their products to market faster. You’ll take ownership of features from start to finish, designing the architecture, writing the code, and seeing everything through to production. Your work will have a direct impact on the future of healthcare technology.

This is a hybrid role in Vienna, with at least three days per week on-site. We’re open to remote employment for exceptional candidates.

About You 

You’re someone who’s passionate about software and making a real impact. You’re curious, enjoy solving tough problems, and love the idea of working in a fast-moving environment where you can take initiative. You’re comfortable collaborating in English with team members from different areas, and you take pride in owning projects from beginning to end. Above all, you’re excited about using technology to improve patient outcomes.

Ideally you will be currently located in Vienna or Europe.

What You'll Do

• Work closely with engineers, designers, and product teams to design new features
• Own technical decisions and take features all the way from concept to launch
• Review and collaborate on code to maintain high standards across the team
• Dig into logs, metrics, and error reports to troubleshoot issues and improve the system
• Team up with our Client Operations team to resolve any technical challenges that come up

What We’re Looking For

• 5+ years of experience working as a software engineer, with strong experience in both frontend and backend
• Solid skills in TypeScript and React
• Experience building scalable web applications and a good understanding of databases (we use PostgreSQL)
• Comfortable working in English and collaborating across teams
• Experience working in an early stage, product-based start up.

Bonus Points

• Experience with Prisma and Next.js
• Experience with GraphQL (urql or Apollo)
• Familiarity with AWS services like S3, RDS, and Elastic Beanstalk
• Strong habits around testing (Jest, Cucumber, Playwright)
• Experience working in regulated industries like healthcare or finance
• An interest in mentoring and helping others grow

Our Tech Stack

Frontend: TypeScript, React, Next.js, Tailwind, JollyUI
Backend: PostgreSQL, Redis, GraphQL (urql), Prisma
Testing: Jest, Cucumber, Playwright
Infrastructure: AWS (e.g. S3, RDS, Elastic Beanstalk), Sentry
Collaboration: Slack, GitHub, Figma, Jira, Confluence

Compensation

At Ketryx, we offer a competitive and transparent compensation package that reflects your experience and skills:

For candidates in Austria with 3–5 years of experience, the gross annual salary starts at €70,000+.

For candidates in Austria with more than 5 years of experience, the gross annual salary starts at €90,000+.

We offer all-in contracts, with final compensation tailored to your qualifications and experience. In addition to the base salary, our package includes a performance-based bonus and stock options, aligning your success with the company’s growth. For remote candidates, salary may be adjusted slightly based on location.

Keywords: software engineering, software development, databases, full stack, quality, change requirement, V-Model, engineer, SaaS, customer feedback, computer science, comp sci, startup, Series A, Series B, technology, tech, software, senior engineer, lead engineer, staff engineer, principal engineer

Job Title: Backend Engineer 
Employment Status: Full-time
Location: Vienna, Austria - Hybrid (preferred) or Remote - EU
Compensation: competitive compensation + performance-based bonus and equity options.
Final compensation is negotiable based on experience and qualifications.
Benefits: free in-office: lunch, drinks, coffee, snacks, Wiener Linien ticket, a yearly company retreat, regular team events

Job Summary

At Ketryx, we’re on a mission to help medical software teams build secure, reliable applications that make a real difference in people’s lives. We give them the tools to automate the tough parts of compliance and quality so they can focus on what matters most: creating life-saving products with confidence.

We're looking for a Backend Engineer to join our team. In this role, you’ll work on the backend of our platform, helping medical device companies get their products to market faster. You’ll take ownership of features from start to finish, designing the architecture, writing the code, and seeing everything through to production. Your work will have a direct impact on the future of healthcare technology.

This is a hybrid role in Vienna, with a minimum of three days per week spent on-site. We’re open to remote work for exceptional candidates.

About You

You’re passionate about software and making a real impact. You’re curious, enjoy solving tough problems, and love the idea of working in a fast-moving environment where you can take initiative. You’re comfortable collaborating in English with team members from different areas, and you take pride in owning projects from beginning to end. Above all, you’re excited about using technology to improve patient outcomes.

What You’ll Own & Contribute To

Database Design

Design and evolve PostgreSQL schemas, write efficient queries, apply indexing strategies, and help ensure the database remains performant and maintainable as the product grows.

Backend Development

Build new integrations between the Ketryx platform and other systems, APIs, and workflows. Contribute to improving latency, throughput, and fault tolerance across the backend stack.

Maintainable Systems

Write clean, well-tested code and contribute to standards around migrations, documentation, and testing. Help ensure the system remains easy to understand, debug, and extend.

Operational Reliability

Participate in monitoring, debugging, and incident response. Help identify performance bottlenecks and reliability issues, and contribute fixes and improvements.

Collaboration

Work closely with Product, Client Operations, Compliance, Security, and other engineers to deliver features that meet both business and regulatory requirements and resolve any technical challenges that come up

What We’re Looking For

• 5+ years of experience working as a software engineer, with strong experience in backend development
• Solid skills in TypeScript
• Strong experience with PostgreSQL: schema design, query optimization, indexing, and performance tuning
• Solid understanding of backend performance and maintainability, including refactoring and technical debt management
• Comfortable collaborating across teams and participating in technical discussions and design reviews
• Comfortable working in English and collaborating across teams

Bonus Points

• Experience with Prisma and Next.js
• Experience with GraphQL (urql or Apollo)
• Familiarity with AWS services like S3, RDS, and Elastic Beanstalk
• Familiarity with Docker and Kubernetes in production or near-production environments.
• Strong habits around testing (Jest, Cucumber, Playwright)
• Experience working in regulated industries like healthcare or finance
• Experience with Kotlin and Spring
• An interest in mentoring and helping others grow

Our Tech Stack

Frontend: TypeScript, React, Next.js, Tailwind, JollyUI
Backend: PostgreSQL, Redis, GraphQL (urql), Prisma
Testing: Jest, Cucumber, Playwright
Infrastructure: AWS (e.g. S3, RDS, Elastic Beanstalk), Sentry
Collaboration: Slack, GitHub, Figma, Jira, Confluence

Compensation

At Ketryx, we offer a competitive and transparent compensation package that reflects your experience and skills:

For candidates in Austria with 3–5 years of experience, the gross annual salary starts at €70,000+.

For candidates in Austria with more than 5 years of experience, the gross annual salary starts at €90,000+.

We offer all-in contracts, with final compensation tailored to your qualifications and experience. In addition to the base salary, our package includes a performance-based bonus and stock options, aligning your success with the company’s growth. For remote candidates, salary may be adjusted slightly based on location.

About the role

We are seeking a Machine Learning Engineer with expertise in classical Computer Vision and Deep Learning to contribute to the development of advanced computer vision algorithms focused on item authentication and fingerprinting.

In this role, you will drive the research, development, and deployment of state-of-the-art algorithms and models aimed at accurately determining the authenticity of items and assigning unique digital identities through image analysis. You will also oversee the optimisation of image capture solutions on edge devices and ensure models are interpretable, scalable, and robust.

As a senior team member, you will collaborate cross-functionally to define and deliver impactful projects and contribute to thought leadership in the computer vision domain.

Reports to: ML Manager
Location: Remote: Austria, Bulgaria, Ukraine, Hungary & Romania

What You'll Do:

Leadership & Strategy

• Define the technical roadmap for computer vision projects, aligning with business goals and customer needs.
• Mentor and provide technical guidance to junior engineers, fostering a culture of collaboration, innovation, and excellence.

Advanced Research & Algorithm Development

• Design and develop cutting-edge computer vision models and algorithms for item authentication, fingerprinting, high-quality image capture and related applications.
• Lead innovation by staying ahead of trends in computer vision and machine learning, introducing novel techniques to improve model performance and scalability.

Scalable Systems & Model Deployment

• Oversee the deployment of machine learning models in production, ensuring robustness, efficiency, and seamless integration into systems.
• Optimise algorithms for edge device deployment, focusing on latency, accuracy, and power consumption.

Collaboration & Stakeholder Engagement

• Work closely with internal and external stakeholders to understand product requirements, define project scopes, and deliver actionable solutions.
• Collaborate with engineering teams to integrate CV models into broader system architectures while maintaining system reliability and performance.

Operational Excellence

• Drive best practices in code quality, testing, and documentation. Review and refine code, ensuring modularity, reliability, and adherence to industry standards.
• Analyse production data to identify opportunities for continuous improvement in algorithms and systems.

Who you are:

• Education: Bachelor's or Master’s in Electronics, Physics, Computer Science, or related field.
• Experience: 3-6 years in computer vision and machine learning development.
• Core Expertise:
  • • Proficient in both traditional CV techniques (feature extraction, image processing) and deep learning methodologies.
    • Advanced knowledge of Python and C++, with expertise in frameworks such as PyTorch, HuggingFace, OpenCV, and CUDA.
    • Extensive experience in designing, training, and deploying CV models at scale, including distributed training and inference pipelines.
    • Expertise in API design and deployment for ML model services such as FastAPI, TensorRT, Nvidia Triton, and Ray.
• Mathematical Proficiency: Strong foundation in probability, statistics, optimisation, linear algebra, and geometry.
• EdgeML Experience: Skilled in deploying and optimising models for iOS devices, with a focus on real-time data processing and resource efficiency.
• Collaboration & Communication: Ability to articulate technical concepts and collaborate in cross-functional, global teams.
• Ownership & Drive: A proactive approach, a high degree of ownership, and an eagerness to tackle complex challenges.

What we offer

• Market-competitive and pay equity-focused compensation structure
• Generous time away, including company holidays, paid time off, sick time, parental leave, and more!
• The agency to innovate, directly impacting product features and customer experiences.
• Opportunity to be part of the core team in a growing setup.
• Opportunities to publish research, contribute to patents, and further develop CVML and edgeML expertise.

We have had an incredible run so far and are laying the foundation for a culture that is fast-paced, entrepreneurial, and rooted in passion, kindness, and positivity. We live by these values – we hire by them, promote them, and celebrate them every day. 

If you are a visionary Computer Vision / ML engineer with extensive experience in crafting production-ready solutions, a passion for mentoring, and a desire to solve impactful challenges, we’d love to connect!

Job Title: Lead Product Designer
Employment Status: Exempt
Office Hours: Hybrid
Location: Vienna, Austria OR Boston, MA, USA
Compensation: Vienna based: €110K+ salary based on experience, Boston based: $155K-$168K salary. Compensation also includes performance-based bonus program and equity
*compensation dependent on related experience level

About Ketryx:

Ketryx is the AI-native compliance platform for regulated industries. We help medical device, pharma, and automotive teams ship software faster without compromising on the safety and quality standards their industries — and their patients — depend on.

We're a Series B company with offices in Boston and Vienna, and we're building the system of record for how regulated AI gets developed and shipped.

About the Role:

We're hiring a Lead Product Designer to make our design team a primary source of user truth at Ketryx.

Our users are not casual software consumers. They are systems engineers, quality leads, regulatory specialists, and software developers working on products where mistakes have real consequences. Designing for them means understanding their work at a depth most B2B companies never reach — and translating that understanding into workflows that feel obvious to the people who live in them every day.

You'll build and lead a research-led design function that deeply understands these personas, shapes what we build (not just how it looks), and partners with product on every roadmap decision. You'll inherit a small team in Vienna, a strong product partnership, and a company that takes design seriously as a peer function across R&D.

This is a hands-on leadership role at early-stage pace. You should be excited to run the playbook yourself before scaling it.

Responsibilities:

• Own discovery as a craft. Stand up a JTBD and persona knowledge base that PMs, engineers, and customer success reference weekly as shared vocabulary. Run a sustained cadence of user research — interviews, synthesis, prototype-based hypothesis testing — at a depth that would have required a much larger research org a few years ago.
• Shape the roadmap upstream. Embed designers as partners with product managers from the earliest stages of discovery, not as downstream service providers. Be the person who can change a roadmap decision through research rather than assertion. Install the rituals — design reviews, discovery syncs, artifact ownership — that keep the user voice central when commercial pressure pulls direction elsewhere.
• Design end-to-end workflows for specialized users. Lead design for products used by multiple personas across a single regulated workflow — from upstream tools like Jira, Polarion, and GitHub all the way through to compliance artifacts and audit-ready records. "User-friendly" here doesn't mean consumer polish; it means making genuinely complex work feel coherent.
• Build the team and the operating model. Develop the design team thoughtfully. Raise the craft bar on persona-to-workflow translation. Establish the standards, systems, and tooling that let design scale without depending on a single leader being in every room.
• Operationalize AI in the design process. Use AI-native tooling to compress the discovery-to-insight loop and run more research, more rigorously, than a traditional team of your size could. We're more interested in how you go deeper on discovery than how fast you can prototype.

Required Skills:

• A track record shipping design for specialized B2B users in regulated or technically deep domains — medtech, legal tech, compliance, industrial, developer tools, finance.
• A research-led orientation. You can show — not describe — a JTBD or persona knowledge base you've built, and walk us through a product decision it shaped.
• Hands-on experience leading a design team through the AI-native transition, with a perspective that goes beyond "we prototype faster now."
• Currently a design lead or strong #2 at a Series B/C B2B SaaS company. Early-stage operating experience is essential.
• Willing and able to travel to Vienna every 4–6 weeks, with heavier travel in the first three months.

Logistics:

This role can be Boston, MA or Vienna, AT based, with travel between offices every 4–6 weeks. Expect heavier travel during your first three months as you get to know the team and the work. The role reports to the Head of Product and partners closely with our CTO and product leadership.

If this sounds like the right next step, we'd love to hear from you.

Keywords: design, ui, ux, ui/ux, user interface, user experience, design, lead

Job title: Head of Software Testing
Employment status: Full-time
Location: Vienna, Austria – Hybrid
Compensation: Competitive compensation + performance-based bonus and equity options
Benefits: Wiener Linien ticket, yearly company retreat, regular team events, free in-office lunch, drinks & snacks

About Ketryx

At Ketryx, we’re on a mission to help medical software teams build secure, reliable applications that make a real difference in people’s lives. We give them the tools to automate the tough parts of compliance and quality so they can focus on what matters most: creating life-saving products with confidence.

The Role

As Head of Software Testing, you’ll define and execute our quality strategy, ensuring that every release of our platform meets the highest standards of safety, reliability, performance, and compliance. You’ll lead a talented team of software quality engineers, testing product features and strengthening our automated testing frameworks, and play a vital role in helping medical device companies bring high-quality technology to market faster. As a quality professional, you will have an impact on our own product that you will also use on a daily basis.

About You

You’re a proven leader in software quality who knows how to build high-performing teams and scalable testing systems. You combine a deep passion for reliability with strong communication skills and a collaborative mindset. You’re detail-oriented, enjoy uncovering edge cases, and take pride in building reliable, maintainable automated tests. You thrive in fast-moving environments where you can influence processes, improve standards, and shape product direction. Above all, you’re motivated to apply your expertise to technology that directly improves patient outcomes.

Ideally you're already located in Vienna or able to relocate quickly. Unfortunately, we are unable to support people without an existing work permit for this position in Austria at this time.

What You’ll Do

• Lead and grow the quality engineering team
• Plan and coordinate verification & validation for software releases and other testing activities
• Drive scaling up of automated testing with a team using Playwright, TypeScript, Cucumber
• Work with the team to keep CI/CD pipelines fast and reliable
• Coordinate work between different teams such as Engineering, DevOps, Product, Customer Success, and Sales, representing the quality and test engineering team
• Own verification & validation for software releases
• Apply quality principles at scale
• Perform risk management
• Prepare and field audits (IEC 62304 & co.)
• Champion a quality-first culture across product and engineering
• Define, track, and share goals and metrics for test automation & product quality, to keep leadership and stakeholders informed and to identify areas for improvement

What We’re Looking For

Must-Haves

• Extensive experience (10+ years) in software quality and testing, with at least 5 years in leadership
• Experience in a high-growth company
• Experience in establishing and running processes to improve overall quality
• Hands-on experience with TypeScript or JavaScript
• Practical experience with test automation tools such as Playwright or Cypress
• Strong knowledge of software QA methodologies, tools, and processes
• Familiarity with BDD practices, ideally using Cucumber
• Experience working in an early stage, product-based start up.

Nice-to-Haves

• Experience preparing for and managing audits
• Experience working in a regulated industry such as MedTech, healthcare, finance, automotive, or aerospace
• Experience using test case management tools such as Xray, TestRail, Azure DevOps, or HP ALM
• Experience with performance and security testing
• Knowledge of ISO 13485 / IEC 62304

Compensation & Benefits

• At Ketryx, we offer a competitive compensation package that reflects your experience and skills. The annual gross salary starts at €100,000+ based on an all-in contract. Final compensation is tailored to your qualifications and experience.
• In addition to the base salary, our package includes a performance-based bonus and stock options, aligning your success with the company’s growth.
• Lunch, snacks, and coffee provided in-office
• Annual Wiener Linien public transportation pass
• Yearly company retreat and regular team events

Keywords: quality lead, test automation engineer, QA, Verification & Validation, V-Model, change request, change requirement, regulation, feature descriptions, SaaS, customer feedback, computer science, comp sci, startup, software development, Series A, Series B, technology, software

Why Cast AI?

Cast AI is an automation platform that operates cloud-native and AI infrastructure at scale. By embedding autonomous decision-making directly into Kubernetes and cloud environments, Cast AI continuously optimizes performance, reliability, and efficiency in production.
The old way doesn't work. As Kubernetes and AI environments grow, manual decisions don’t. Cast AI replaces tickets, alerts, and manual tuning with continuous automation that adapts infrastructure as conditions change. Efficiency and cost savings follow naturally from that automation.
Over 2,100 companies already rely on Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS.

Global team, diverse perspectives

We're headquartered in Miami, but our impact is international. We take a global and intentional approach to diversity. Today, Cast AI operates across 34 countries spanning Europe, North America, Latin America, and APAC, bringing a wide range of perspectives into how we build and lead.

Unicorn momentum

In January 2026, we achieved unicorn status with a strategic investment from Pacific Alliance Ventures, the corporate venture arm of Shinsegae Group (a $50+ billion Korean conglomerate). Our valuation now exceeds $1 billion, and we're just getting started.

Join us as we build the future of autonomous infrastructure.

About the role

Throughput. Latency. KV cache utilization.

Move those three numbers in the right direction, and two things happen: customers get faster, cheaper inference, and our margins improve. That's the entire thesis of this role. Every kernel you tune, every quantization scheme you ship, every scheduler tweak you land shows up directly in a customer's p99 and on our P&L.
This is a high-impact seat. It is also a high-autonomy seat as you'll be given the room to lead the technical direction of inference optimization at Kimchi, not execute someone else's roadmap.

The problem: running LLMs in production is a moving target. The "right" model and serving configuration for a workload depend on traffic shape, sequence-length distribution, batch dynamics, GPU SKU, memory bandwidth, quantization tolerance, and a dozen other variables that shift week to week. Most teams pick a model once, over-provision GPUs, and absorb the cost. Kimchi is the system that makes that decision automatically - continuously matching workloads to the most cost-efficient, best-performing LLM and serving configuration on a customer's infrastructure. We're building the optimization layer between the model and the hardware, and we need engineers who understand both sides deeply.

Stack

Python; vLLM; SGLang; TensorRT-LLM; PyTorch; CUDA-adjacent tooling; Kubernetes; gRP; ClickHouse; PostgreSQL; GCP Pub/Sub; AWS / GCP / Azure; GitLab CI; ArgoCD; Prometheus; Grafana; Loki; Tempo.

Requirements:

• 5+ years building real ML systems, with a portfolio that shows depth in inference or training infrastructure (not just model training notebooks).
• Strong Python - production services, not scripts.
• Hands-on experience with at least one of vLLM, SGLang, or TensorRT-LLM, and a working mental model of why an inference engine performs the way it does on a given GPU.
• Fluency with quantization tradeoffs - you've measured quality regressions, not just compression ratios.
• Comfort with distributed systems: collective communication, sharding strategies, and the practical failure modes of multi-GPU and multi-node setups.
• A bias toward measurement. You instrument before you optimize, and you can tell the difference between a real win and a benchmark artifact.
• Self-direction. This role comes with a wide mandate; you should be excited by that, not unsettled by it.

Responsibilities:

• Push throughput. Continuous batching, speculative decoding, chunked prefill, kernel-level tuning across vLLM, SGLang, and TensorRT-LLM. Find the ceiling on each GPU SKU, then raise it.
• Cut latency. Attack TTFT and TPOT separately. Profile, identify the actual bottleneck (compute, memory bandwidth, scheduling, networking), and fix it - not the bottleneck you assumed.
• Get more out of the KV cache. Paged attention, prefix caching, eviction policies, cache reuse across requests, quantized KV. This is where a lot of the unrealized throughput lives, and it's an area you'll own.
• Quantize without regressing quality. INT8, INT4, FP8 across weights, activations, and KV. Empirical work: measure quality on real workloads, not just perplexity benchmarks.
• Shrink cold starts and memory footprint. Faster init, smarter weight loading, tighter memory accounting - the difference between a model that scales and one that doesn't.
• Scale across nodes. Distributed inference topologies, network-aware placement, checkpointing strategies that don't bottleneck on storage or interconnect.
• Set the technical direction. Decide what we benchmark, what we adopt, and what we build ourselves. Bring the team along with strong writeups and reproducible experiments.

What’s in it for you?

• Competitive salary (depending on the level of experience).
• Enjoy a flexible, remote-first global environment.
• Collaborate with a global team of cloud experts and innovators, passionate about pushing the boundaries of Kubernetes technology
• Equity options.
• Get quick feedback with a fast-paced workflow. Most feature projects are completed in 1 to 4 weeks.
• Spend 10% of your work time on personal projects or self-improvement. 
• Learning budget for professional and personal development - including access to international conferences and courses that elevate your skills.
• Annual hackathon to spark new ideas and strengthen team bonds.
• Team-building budget and company events to connect with your colleagues.
• Equipment budget to ensure you have everything you need.
• Extra days off to help maintain a healthy work-life balance.

Hiring process

• Screening call with Recruiter
• Hiring Manager interview
• Technical interview (system design)
• Live coding
• Culture Check interview with an executive

As part of our standard hiring process, we would like to inform you that a background check may be conducted at the final stage of recruitment through our third-party provider, Checkr.
Please note that Cast AI does not provide any form of visa sponsorship/work permit.

#LI-Remote

Job Title: QA/RA Lead
Employment Status: Full-time
Office Hours: Mon, Wed, Fri with WFH option on Tue & Thu
Location: Vienna, Austria
Compensation: Starting from 90,000 EUR gross base salary + performance-based bonus and equity options. Compensation may be negotiated based on experience level.

As a Ketryx QA/RA Lead, you will lead quality management system implementations and regulatory compliance strategies for cutting-edge medical device clients as we scale our AI-powered compliance platform. This is a rare opportunity to shape the future of regulatory affairs. You'll have the autonomy and expertise to drive repeatable QMS deployment processes while helping shape the future of regulatory affairs through innovative technology and enabling the success of the world’s most innovative companies. We offer the opportunity to work with high-growth clients, establishing best-in-class quality systems from the ground up using our revolutionary AI platform.

Our ideal candidate will have demonstrated success in quality systems management with 5-8 years of experience in the medical device industry. Someone who is strategic yet hands-on, passionate about regulatory excellence, and eager to leverage cutting-edge AI technology will thrive in this position. In this role, you'll have the opportunity to directly impact our mission to improve 100 million patient lives by 2030 by ensuring the highest quality standards for life-saving medical devices.

This position will be based in our Vienna, Austria office with a hybrid schedule (Monday, Wednesday, Friday in office, Thusday, Thursday WFH option). Unfortunately, we are unable to support non-EU citizens for the position at this time.

About You:

You're a proven QMS expert who's successfully navigated complex medical device regulatory landscapes and is ready to scale your impact through innovative technology. You've built or significantly improved quality systems at medical device companies, consulting firms, or high-growth startups, and you're excited to combine your regulatory expertise with AI-powered tools to create something category-defining. You are an energetic, creative, and progressive quality leader who thrives on driving innovation and continuous improvement in regulated environments.

Responsibilities:

• Lead Quality Management System (QMS) setup and deployment for medical device clients
• Own and manage QMS templates and regulatory compliance frameworks
• Provide expert consulting on ISO 13485, EU MDR/IVDR, UKCA, GxP, and other quality systems standards
• Scale operations to support high-growth clients
• Develop repeatable QMS deployment processes leveraging AI platform capabilities and automatic compliance
• Drive and/or support internal and external audit programs, customer audits and regulatory inspections.
• Orchestrate the continuous validation lifecycle, including drafting, reviewing, and approving documentation to ensure real-time compliance program management.
• Shape the future of regulatory affairs through innovative product development
• Work independently on complex quality assurance projects requiring minimal oversight
• Ensure customer success across the entire customer engagement lifecycle

Required Skills:

• 4-8 years of experience in quality systems management, management representative or senior specialist role
• Familiar with eQMS implementation, validation and implementation.
• Deep expertise in Quality Management System setup, sub-systems, and implementation
• Strong knowledge of ISO 13485 and Global QMS requirements
• Expertise in AI, Digital, SaMD and Cyber Compliance (e.g. SOC 2, ISO 27001)
• Deep understanding of medical device cybersecurity
• Experience as quality management representative in regulated environments
• Proven experience managing audit lifecycles (internal, external, and customer-facing).
• Familiarity with continuous validation methodologies (e.g. CSV, GAMP 5, ISO 13485) and documentation within a digital or automated compliance environment.
• Experience with regulatory and Notified Body submission requirements
• Background in medical device industry quality systems
• Ability to work independently and own complex regulatory projects
• Proven track record in consulting or client-facing roles

Preferred Skills:

• Experience at large medical device companies
• Background with consulting firms specializing in QMS setup
• Startup experience (Series A/B) with QMS implementation
• Specializations in cybersecurity, usability, or computer software validation
• Experience scaling quality operations in high-growth environments
• Knowledge of AI applications in regulatory affairs
• Submission experience
• Experience working in an early stage, product-based start up.

Keywords: ISO 13485, EU MDR/IVDR & UKCA, Quality Management System (QMS), Management representative, Medical device quality, Stryker, Medtronic, Boston Scientific, QMS setup, Regulatory consulting, Quality systems manager, Computer software validation, Cybersecurity, Usability, Startup experience, Series A/B, Vienna/Austria, Consulting firms, Quality assurance, Medical device industry

As a Sales Director, you will play a pivotal role in Cloudbeds' growth, leveraging your extensive network and deep understanding of the mid-market hotel landscape to drive high-value ARR and expand our brand. Your expertise in hospitality technology will be essential as you build relationships, forge partnerships, and position Cloudbeds as the go-to solution for independent hotels. This is a hunter role focusing on acquiring new clients. 

Our Strategic Sales Team:

We partner with the world’s most ambitious hospitality businesses. One day, you’ll be at a tech conference, exchanging insights with industry leaders. The next, you’ll be advising founders of an emerging alternative accommodation brand on how to scale globally.

You’ll work with hotel groups seeking a unified platform for revenue, reservations, distribution, and marketing. Large independent properties will rely on you to help them stand out against global brands.

As a fast-growing player in the mid-market, we need entrepreneurial thinkers who challenge the status quo. You’ll collaborate across Marketing, Support, Product, and Partnerships to deliver the best solutions while balancing client advocacy with business strategy. And, of course, we want you to enjoy the journey—because transforming hospitality should be just as exciting as the industry itself.

What You Bring to the Team:

• Build and execute a sales strategy targeting independent hotels and groups, identifying opportunities to drive revenue and expand Cloudbeds' presence.
• Deliver on your sales forecasts to ensure that we hit our ambitious goals
• Conduct exceptional virtual client presentations that clearly articulate Cloudbeds’ value proposition 
• Represent Cloudbeds at major industry events, serving as a brand ambassador and building connections with potential clients and influencers.
• Provide valuable feedback from the field to sales leadership, product and marketing teams.
• Cultivate strong post-sale relationships (NOT Account Management, that’s another team) that lead to happy clients and fuel valuable referrals.

What Sets You Up for Success:

• 5+ years of experience as a top-performing sales professional, using a highly consultative approach.
• A deep understanding of the mid-market hotel ecosystem with a proven track record of successfully selling to independent hotels, groups and driving ARR growth
• Expertise in hospitality technology, with a passion for helping hotels thrive through innovative solutions. Good knowledge of PMS technology.
• Strong business acumen, exceptional negotiation skills, and a consultative sales approach.
• Proven success in building pipelines independently, without BDR/SDR support
• Expertise in Salesforce CRM and experience with long-term pipeline management
• Exceptional communication and listening skills
• German language fluency
• Alignment with Cloudbeds’ core values

As a Sales Director, you will play a pivotal role in Cloudbeds' growth, leveraging your extensive network and deep understanding of the mid-market hotel landscape to drive high-value ARR and expand our brand. Your expertise in hospitality technology will be essential as you build relationships, forge partnerships, and position Cloudbeds as the go-to solution for independent hotels. This is a hunter role focusing on acquiring new clients. 

Our Strategic Sales Team:

We partner with the world’s most ambitious hospitality businesses. One day, you’ll be at a tech conference, exchanging insights with industry leaders. The next, you’ll be advising founders of an emerging alternative accommodation brand on how to scale globally.

You’ll work with hotel groups seeking a unified platform for revenue, reservations, distribution, and marketing. Large independent properties will rely on you to help them stand out against global brands.

As a fast-growing player in the mid-market, we need entrepreneurial thinkers who challenge the status quo. You’ll collaborate across Marketing, Support, Product, and Partnerships to deliver the best solutions while balancing client advocacy with business strategy. And, of course, we want you to enjoy the journey—because transforming hospitality should be just as exciting as the industry itself.

What You Bring to the Team:

• Build and execute a sales strategy targeting independent hotels and groups, identifying opportunities to drive revenue and expand Cloudbeds' presence.
• Deliver on your sales forecasts to ensure that we hit our ambitious goals
• Conduct exceptional virtual client presentations that clearly articulate Cloudbeds’ value proposition 
• Represent Cloudbeds at major industry events, serving as a brand ambassador and building connections with potential clients and influencers.
• Provide valuable feedback from the field to sales leadership, product and marketing teams.
• Cultivate strong post-sale relationships (NOT Account Management, that’s another team) that lead to happy clients and fuel valuable referrals.

What Sets You Up for Success:

• 5+ years of experience as a top-performing sales professional, using a highly consultative approach.
• A deep understanding of the mid-market hotel ecosystem with a proven track record of successfully selling to independent hotels, groups and driving ARR growth
• Expertise in hospitality technology, with a passion for helping hotels thrive through innovative solutions. Good knowledge of PMS technology.
• Strong business acumen, exceptional negotiation skills, and a consultative sales approach.
• Proven success in building pipelines independently, without BDR/SDR support
• Expertise in Salesforce CRM and experience with long-term pipeline management
• Exceptional communication and listening skills
• German language fluency
• Alignment with Cloudbeds’ core values

As a Sales Director, you will play a pivotal role in Cloudbeds' growth, leveraging your extensive network and deep understanding of the mid-market hotel landscape to drive high-value ARR and expand our brand. Your expertise in hospitality technology will be essential as you build relationships, forge partnerships, and position Cloudbeds as the go-to solution for independent hotels. This is a hunter role focusing on acquiring new clients. 

Our Strategic Sales Team:

We partner with the world’s most ambitious hospitality businesses. One day, you’ll be at a tech conference, exchanging insights with industry leaders. The next, you’ll be advising founders of an emerging alternative accommodation brand on how to scale globally.

You’ll work with hotel groups seeking a unified platform for revenue, reservations, distribution, and marketing. Large independent properties will rely on you to help them stand out against global brands.

As a fast-growing player in the mid-market, we need entrepreneurial thinkers who challenge the status quo. You’ll collaborate across Marketing, Support, Product, and Partnerships to deliver the best solutions while balancing client advocacy with business strategy. And, of course, we want you to enjoy the journey—because transforming hospitality should be just as exciting as the industry itself.

What You Bring to the Team:

• Build and execute a sales strategy targeting independent hotels and groups, identifying opportunities to drive revenue and expand Cloudbeds' presence.
• Deliver on your sales forecasts to ensure that we hit our ambitious goals
• Conduct exceptional virtual client presentations that clearly articulate Cloudbeds’ value proposition 
• Represent Cloudbeds at major industry events, serving as a brand ambassador and building connections with potential clients and influencers.
• Provide valuable feedback from the field to sales leadership, product and marketing teams.
• Cultivate strong post-sale relationships (NOT Account Management, that’s another team) that lead to happy clients and fuel valuable referrals.

What Sets You Up for Success:

• 5+ years of experience as a top-performing sales professional, using a highly consultative approach.
• A deep understanding of the mid-market hotel ecosystem with a proven track record of successfully selling to independent hotels, groups and driving ARR growth
• Expertise in hospitality technology, with a passion for helping hotels thrive through innovative solutions. Good knowledge of PMS technology.
• Strong business acumen, exceptional negotiation skills, and a consultative sales approach.
• Proven success in building pipelines independently, without BDR/SDR support
• Expertise in Salesforce CRM and experience with long-term pipeline management
• Exceptional communication and listening skills
• German language fluency
• Alignment with Cloudbeds’ core values

ROLE OVERVIEW

Quantitative Engineer

We are seeking a Quantitative Engineer to help build and enhance our research infrastructure and improve our existing suite of models. The ideal candidate is a mid-level engineer with extensive software development experience in a highly data-driven industry such as finance, technology, or machine learning. The ability to collaborate across teams and support multiple projects is essential.

RESPONSIBILITIES

• Design scalable systems to support Massar’s quantitative research program.
• Develop high-performance platforms for quantitative research.
• Write comprehensive documentation and conduct code reviews.
• Promote and uphold firm-wide best coding practices.

REQUIREMENTS

• Degree in computer science or a related field.
• Development experience with AWS or other cloud providers.
• 2+ years of Python experience, including proficiency with libraries such as NumPy, Pandas, PyTorch and TensorFlow.
• Excellent communication skills, self-starter, quick learner, positive attitude, and team player
• Experience in at least one of the following areas:
• Econometrics, factor analyses, or automated trading.
• Weather data modeling.
• Machine learning techniques, such as neural networks.
• Robotics and/or sensor networks.
• Other high-dimensional, computationally intensive data problems. 

COMPENSATION

The all-inclusive salary for this position STARTS at EUR 95.000,00. Competitive and performance-based compensation package, depending upon qualifications.