All active ML Engineer roles based in Austria.
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Job Title: Senior 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 Senior 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
Bonus Points
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.
Ketryx is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances
Ketryx is saving and improving lives by making medical software safe and reliable. We empower software teams building medical applications to create safe, secure, and compliant products used by patients and providers worldwide. We believe that, by automating much of the documentation and quality processes, teams will be able to produce safer and more innovative medical software faster.
Ketryx is at the forefront of helping teams incorporate AI/ML into medical software and that’s why we need you!
Ready to apply?
Apply to KetryxJob 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
What We’re Looking For
Bonus Points
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
Ketryx is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances
Ketryx is saving and improving lives by making medical software safe and reliable. We empower software teams building medical applications to create safe, secure, and compliant products used by patients and providers worldwide. We believe that, by automating much of the documentation and quality processes, teams will be able to produce safer and more innovative medical software faster.
Ketryx is at the forefront of helping teams incorporate AI/ML into medical software and that’s why we need you!
Ready to apply?
Apply to KetryxJob 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
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.
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.
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.
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
Ketryx is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances
Ketryx is saving and improving lives by making medical software safe and reliable. We empower software teams building medical applications to create safe, secure, and compliant products used by patients and providers worldwide. We believe that, by automating much of the documentation and quality processes, teams will be able to produce safer and more innovative medical software faster.
Ketryx is at the forefront of helping teams incorporate AI/ML into medical software and that’s why we need you!
Ready to apply?
Apply to KetryxShare this job
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.
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.
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
Ready to apply?
Apply to Cast AI
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FIRM OVERVIEW
Massar Capital Management, LP (“Massar”) is an alternative investment management company founded in 2015. We employ a global macro trading strategy that seeks to capture investment opportunities across commodity, foreign exchange, fixed income, equity, and derivatives markets. With offices in the United States and Europe, Massar prides itself on its dynamic, entrepreneurial culture. Our investment philosophy combines fundamental understanding of individual assets with a quantitative, data-driven process. We build proprietary technology and develop statistical methods to leverage both public and in-house data sets. Our team members possess strong technical skills, a passion for problem-solving, and an intellectual curiosity about financial markets.
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
REQUIREMENTS
COMPENSATION
The all-inclusive salary for this position STARTS at EUR 95.000,00. Competitive and performance-based compensation package, depending upon qualifications.
Ready to apply?
Apply to Massar Capital
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