Full Stack Developer - European Organization for Nuclear Research (Geneva)

About this position

The summary below is published by European Organization for Nuclear Research on the official vacancy notice. Our own analysis — salary realism, comparable openings, career trajectory, language profile — follows further down the page.

Key responsibilities

According to the vacancy notice, the role centres on the following duties:

• Feature development and bug fixes
• Contribution to the technical evolution of services
• Advanced user support, including in person consultations with service managers around CERN
• Service and user support (upgrades, advanced integration support, business continuity)
• Stakeholder management and service roadmap contribution

Are you eligible?

Check these requirements from the notice before investing time in an application:

• Education: Bachelor's or Master's degree in Computer Science or equivalent/related field
• Experience: Maximum of two years of professional experience since graduation
• Languages: English (spoken…), French (commitm…)
• Key skills: Full-stack software development in .NET and ReactJS, Version control systems and CI/CD workflows, OAuth, OIDC or SAML protocols, Software development, Problem-solving and analytical skills, Collaborative user support, Communication and teamwork
• Eligibility: National of a CERN Member or Associate Member State. Maximum two years of professional experience since graduation. Never had a CERN fellow or graduate contract before. Must hold a Bachelor's or Master's degree. PhD holders are not eligible.

Contract and working arrangements

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

Working arrangements: Hybrid. 40 hours per week. Stand-by duty and work during nights, Sundays and official holidays when required..

Hiring unit: Identity and Account Management services, Information Technologies.

Position details

Reference

IT-PW-IAM-2026-221-GRAE

Last Verified

15 September 2026

Position overview

This is the official EU Careers listing for Full Stack Developer at CERN based in Geneva (Other). The vacancy reference is IT-PW-IAM-2026-221-GRAE. The role falls under the Research domain.

- Full-time - Compensation: CHF 5,266 - CHF 5,793 - monthly

Are you eager to grow your skills while contributing to world-leading science? Join the team behind CERN's Identity and Account Management services, which enable thousands of scientists and staff to securely access the tools they need every day to push the boundaries of research.

Your role will encompass feature design and development (.NET, ReactJS) and service and user support (upgrades, advanced integration support, business continuity). During the contract you will have the opportunity to grow into a service manager role, taking increasing ownership of stakeholder management and contributing to the service roadmap.

The specific services in scope of this role are: Group Management, Account Management, Digital Resource Eligibility and Lifecycle Management.

Your responsibilities:

- Feature development and bug fixes. - Contribution to the technical evolution of services. - Advanced user support, including in person consultations with service managers around CERN.

Your profile:

- Experience with full-stack software development in .NET, ReactJS. - Experience with version control systems and CI/CD workflows. - Experience in using OAuth, OIDC or SAML protocols. - Knowledge of Microsoft Identity Manager (MIM) is an advantage. - Knowledge of Openshift or Kubernetes is an advantage.

Skills:

- Software development. - Strong problem-solving and analytical skills. - Collaborative user support. - Communication, working in teams. - 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 Equivalent (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: 28.09.2026 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-December-2026

This position involves:

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

Job reference: IT-PW-IAM-2026-221-GRAE

Field of work: Information Technologies

Benchmark job: 200020 - Computing Engineer

Global Benefits

- A monthly net stipend of either 5266 or 5793 Swiss Francs per month 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

By clicking the link above or any third-party link within this posting, you are leaving this site and going to a third-party website where the third-party website's terms and privacy policy apply

Application timeline

This vacancy was first listed on 7 September 2026, 8 days ago.

No closing date is published in the source feed for this position. EU vacancies typically remain open for four to eight weeks; check the official vacancy notice for the cut-off date and time.

Last verified against the EU Careers feed on 15 September 2026.

Where to learn more

For headcount, mission, and other open vacancies at CERN see the CERN institution page; for the cost of living, correction coefficient, and other postings in Geneva see our Geneva location page; for related vacancies in the Research field browse our Research domain page.

New to EU careers? Our beginner's guide walks through entry routes, EPSO competitions, and what to prepare. For application logistics see application tips and EPSO competitions.