Full-Stack Software Engineer (IT-CA-IR-2026-99-GRAE)

The CERN Document Server (CDS) is CERN's institutional repository, dedicated to archiving, preserving, and disseminating research outputs, multimedia content, and other key documents produced by the organisation. We are building the next-generation web platform based on the open-source technology InvenioRDM, and as a Graduate, you will play a crucial role in shaping its future.

Our ultimate goal is to create a seamless workflow for researchers, enabling them to archive, publish, and share research outputs, including software, data, and documents, more easily and efficiently. This is a unique opportunity to make a meaningful impact on how CERN researchers manage and disseminate their work.

Your responsibilities

• Develop and maintain web applications using Python on the backend and React on the frontend and implement new features to support the archiving, publication, and sharing of research outputs.
• Contribute to the migration of existing content to a new digital platform, ensuring data quality and consistency.
• Write, test, and review code to ensure reliability, performance, and maintainability.
• Collaborate with software engineers and end users to understand requirements and translate them into technical solutions.
• Document technical solutions and contribute to user and developer documentation.
• Learn and apply best practices in software engineering, version control, and agile teamwork.

Your profile

• Experience with Python and web application development (for example using Flask or similar frameworks).
• Basic knowledge of JavaScript and modern web interfaces (for example React or similar libraries).
• Familiarity with version control systems, such as Git.
• Ability to write clear, maintainable code and learn new technologies.
• Experience with relational databases, such as PostgreSQL.
• Familiarity with search or indexing technologies, such as Elasticsearch or OpenSearch.
• Exposure to container technologies, such as Docker, and container platforms (for example OpenShift).
• Experience contributing to or working with open-source software projects.

Skills

• Python, Flask, JavaScript, React, Git skills are required.
• PostgreSQL, Elasticsearch/OpenSearch skills are advantageous.
• Docker, OpenShift skills are advantageous.
• Experience working on open source projects is advantageous.
• 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 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.

Job closing date: 14.07.2026 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-November-2026

Job reference: IT-CA-IR-2026-99-GRAE

Field of work: Software Engineering and IT

Benchmark job: 200020 - Computing Engineer

Global Benefits

• A monthly stipend between 5266-5793 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