Machine Learning Engineer

You will design, integrate, and operate advanced machine learning capabilities within CERN's machine learning platform, enabling scalable, secure, and reusable ML services for scientific and IT workloads. Working closely with experiments and service teams to onboard their ML use cases in a reliable, performant and sustainable manner, you will build CERN's next-generation LLM and AI agent platform, tuning models into secure, scalable services for scientific and operational use cases. You will be responsible for the design and integration of the selected tools after extensive due diligence and validation against CERN use cases in all departments., * Develop and operate the machine learning service of CERN IT, covering model training, hyper-parameter optimisation and serving, targeting optimal usage of accelerator resources.

• Integrate and operate LLM and AI agent capabilities within the CERN machine learning service, including scalable model serving, agent frameworks, and secure multi-tenant access.
• Extend existing MLOps workflows to cover deployment, observability and lifecycle management of models, agents and RAG pipelines targeting CERN and external data sources.
• Produce and present reference architectures, documentation and best practices to support CERN users and use cases., * Stand-by duty, and work during nights, Sundays and official holidays, when required by the needs of the Organisation., * You are a national of a CERN Member State or Associate Member State . Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.

• Strong background in machine learning systems with hands-on experience deployment and operating such services in production environments.
• Solid MLOps and cloud native skills, including Kubernetes and containerisation, CI/CD, observability and model lifecycle management.
• Proficiency with GPU and/or other accelerator platforms, including performance tuning and optimisation of inference workloads.
• Familiarity with open source ecosystems and willingness to contribute, evaluate upstream projects and follow community best practices., * Knowledge of operating systems.
• Knowledge of system configuration tools.
• Architecture and design of ICT systems.
• Identification and selection of relevant emerging ICT technologies.

• A minimum entry-salary of 9236 Swiss Francs per month (tax free), increasing in line with your years of relevant experience.
• 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, removal, travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

The IT Department designs, operates, and evolves CERN's core computing and digital infrastructure. It provides the large-scale data processing, storage, networking, and collaboration services that enable CERN's scientific programme. The Department supports the LHC and non-LHC experiments, accelerator systems, and the wider CERN community, while advancing new computing technologies through research, development, and strategic partnerships. 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!