Full-Stack Web Developer

Job DescriptionAs a full-stack developer in the Tools Team at SY-EPC-CCS, you'll become the main responsible for a set of crucial web applications used by converter experts to ensure smooth operation of the power converters at CERN. You'll be working closely with other team members, applying an agile work approach, and work on different products in sprints (Scrum).Your responsibilitiesWorking on front-ends in JavaScript (Vue3.js).Working on back-ends in Python (FastAPI).Working on databases in SQL (PostgreSQL / Oracle).Contributing to the team's containerization setup / workflow (Docker, Compose, Kubernetes, ArgoCD, Helm).Gathering and iterating over requirements and features with our users and stakeholders (Power Converter Experts).Collaborating closely in a team of developers who are working on the full stack of the tools suite, using the Scrum framework.Providing application support to converter experts / users (debugging, fixing etc.).Participate in the internal support of power converter controls (treating data modification requests).Potentially supervise computer science students / interns.More information here.Your profileExperience:Experience with UI/UX design and web front-end development.Experience with web back-end (REST API) design and development.Experience with database design and development.Experience with gathering user requirements.Knowledge of or experience with DevOps (Docker, Compose, Kubernetes) would be an advantage.Skills:JavaScript / TypeScript (Vue3.js, Pinia, Vite);Python (FastAPI, SQLAlchemy, Pydantic, asyncio);SQL (PostgreSQL, Oracle);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 Computer Science (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.Additional InformationJob closing date: 08.01.2026 at 23:59 CET.Contract duration: 24 months, with a possible extension up to 36 months maximum.Working hours: 40 hours per weekJob flexibility: HybridTarget start date: 01-April-2026This position involves:Stand-by duty, when required by the needs of the Organisation.Job reference: SY-EPC-CCS-2025-292-GRAEField of work: Software Engineering and ITBenchmark job: 200020 - Computing EngineerGlobal BenefitsA monthly stipend between 5196-5716 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 possibleAt 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 PARTMore information about us, here: careers.cern