Software Engineer; EN-EL-CBS--GRAP

Software Engineer (EN-EL-CBS-2026-24-GRAP)

We are looking for a skilled Software Engineer to support the integration, automation, and maintenance of web-based applications within a large-scale technical infrastructure. The role involves full-stack development, third‑party software integration, and close collaboration with both technical and non-technical stakeholders.

• Full-time

• Integrate third‑party software into CERN's infrastructure using standardised APIs and technologies.
• Ensure the reliable and stable operation of third‑party software.
• Act as a technical liaison with third‑party software suppliers and CERN for troubleshooting, bug resolution, and development follow-up.
• Automate administration and operational tasks for third‑party software through standardised APIs.
• Design, develop, and maintain web‑based applications supporting operational and administrative workflows.
• Capture user requirements, design solutions, implement automation tools, and present results to end users.
• Develop and maintain automated tests, ensuring reliability and long‑term maintainability.
• Produce and keep up to date technical documentation and user‑facing documentation.
• Report on development progress and document implementation decisions.
• Demonstrate developed solutions to both technical and non‑technical audiences.
• Proven experience in development and maintenance of web‑based applications.
• Strong back‑end development experience using Java 11+
• Experience with Spring Boot and JPA/Hibernate.
• Hands‑on experience with database integration (Oracle, Postgre
  
  SQL, or equivalent relational databases).
• Experience developing and consuming RESTful APIs.
• Frontend development experience with Angular (latest versions) or an equivalent modern framework.
• Experience with full‑stack development practices, including CI/CD pipelines.
• Familiarity with Docker and containerised environments.
• Experience working with issue tracking and project management tools such as Jira.

• Solid understanding of software engineering principles and best practices.
• Ability to design clean, maintainable, and testable code.
• Strong analytical and problem‑solving skills.
• Experience with automated testing frameworks (unit, integration, end‑to‑end).
• Ability to work independently and as part of a multidisciplinary team.
• Clear communication skills, including the ability to explain technical concepts to non‑technical users.
• Structured and well‑documented approach to development.
• Spoken and written English or French, with a commitment to learn the other language.
• You have a professional background in Software Engineering (or a related field) and have either:
  • Master's degree with 2 to 6 years of post‑graduation professional experience;
  • or a PhD with no more than 3 years of post‑graduation professional experience.
• You have never had a CERN fellow or graduate contract before.

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

Working hours:

40 hours per week

Job flexibility:
Hybrid

Field of work:
Software Engineering and IT

Benchmark job: 200020 - Computing Engineer

• A monthly stipend between 6372‑7004 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.

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!