Machine Learning Engineer (IT-CD-PI-2026-98-GRAE)

Ready to build AI platforms at the scale of CERN? Join the IT Platforms Infrastructure team and help power the next wave of scientific discovery with machine learning, large language models (LLMs), and emerging agentic AI systems.

You will design and operate shared AI platforms used by experiments, researchers, and services across CERN - combining open-source innovation, cloud-native technologies, and high-performance computing to turn vast volumes of scientific data into insight.

Your responsibilities:

• Design, develop, and operate shared AI platforms supporting machine learning, LLMs, and agentic systems, from training and fine-tuning to large-scale inference.
• Collaborate with CERN teams to identify, prototype, and benchmark AI use cases across heterogeneous computing infrastructures.
• Build and maintain an open-source-based AI/MLOps ecosystem, including model and agent lifecycle management, evaluation, monitoring, and engagement with open-source communities and industry partners.

Your profile:

• Experience with machine learning systems and platforms, including practical operation of ML services.
• Strong knowledge of MLOps and cloud-native technologies, such as Kubernetes, containers, CI/CD, observability, and model lifecycle management.
• Experience with GPU or accelerator-based workloads, including performance optimisation for training and inference.
• Familiarity with open-source ecosystems, with an interest in evaluating and contributing to community projects.

Skills

• Comfortable with Linux based systems.
• Knowledge of system configuration tools.
• Identification and selection of relevant emerging ICT technologies.
• Knowledge and application of software life-cycle tools and procedures.
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• By the application deadline, you have a maximum of two years of professional experience since graduation in Computing Engineering (or a related field) and your highest educational qualification is either a Bachelor's or Master's degree.
• You have never had a CERN fellow or graduate contract before.
• Applicants without University degree are not eligible.
• Applicants with a PhD are not eligible.

Job closing date: 28.04.2026 at 23:59 CEST.

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Working hours: 40 hours per week

Job flexibility: Hybrid

Target start date: 01-July-2026

This position involves:

• Work during nights, Sundays and official holidays, when required by the needs of the Organization.

Job reference: IT-CD-PI-2026-98-GRAE

Field of work: Software Engineering and IT

Benchmark job: 200020 - Computing Engineer

Global Benefits

• A monthly stipend between 5266-5793 Swiss Francs per month (tax free) depending on your degree.
• 30 days of paid leave per year plus 2 weeks annual closure.
• Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Family, child and infant monthly allowances depending on your individual circumstances.
• A relocation package (installation grant and travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 36 months.
• On-the-job and formal training including language classes.

Overview of CERN - Discover a world where the impossible is made possible!

At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive.

Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success.

If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART!

More information about us, here: careers.cern