CERN: Full-stack Software Engineer (EN-EL-CBS-2025-279-GRAE) – Geneva

CERN Position: Full-stack Software Engineer (EN-EL-CBS-2025-279-GRAE)

Location: Geneva, ch

Job Description:

You will contribute to the design, development, and maintenance of web-based applications supporting the operational and engineering activities of the Electrical Engineering Group, working within a small but agile and talented cross-functional team in the Controls and Business Support Section.

Your responsibilities:

• Maintain, enhance, and modernise existing web applications that support operational workflows.
• Design and implement robust frontend and backend components using modern web technologies.
• Ensure seamless integration and interoperability of digital tools within CERN”s broader infrastructure ecosystem.
• Create user documentation that explains how to use the applications (user guides, tutorials, or help documentation).
• Contribute to the DevOps processes, including continuous integration and deployment, and containerisation strategies.

Your profile:

• Proficiency in developing web-based applications.
• Proficiency in Java backend development.
• Strong knowledge of Spring Boot and JPA.
• Proficiency in Angular or equivalent modern frontend frameworks.
• Solid understanding of relational databases, data modelling and PL/SQL.
• Knowledge of full-stack development practices, CI/CD pipelines, Docker, Jira.
• Exposure to C# and .NET APIs.

Skills:

• Java (11+) , Angular (latest), HTML, CSS, JavaScript, Git.
• REST APIs knowledge.
• Basic DevOps knowledge.
• Spoken and written English or French, with a commitment to learn the basics of the other language.

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 Software 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.

Additional Information:

Job closing date: 05.01.2026 at 23:59 CET.

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

Working hours: 40 hours per week

Job flexibility: Fully Onsite

Target start date: 01-February-2026

Job reference: EN-EL-CBS-2025-279-GRAE

Field of work: Software Engineering and IT

Benchmark job: 200020 – Computing Engineer

Global Benefits

• A 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 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

Level of Education: Master Degree

Work Hours: 8

Experience in Months: 24