Your responsibilities

We are looking for a Software Engineer to join Zenodo, the world's largest general purpose research repository developed at CERN.

In this role, you will design, build, and maintain robust backend and frontend services that enable millions of researchers worldwide to share, preserve, and reuse their scientific outputs. You will work on scalable, modular, and user-friendly components within the InvenioRDM framework and you will ensure seamless integration with Zenodo's production environment. You will also work closely with AI/ML specialists to integrate intelligent services directly into Zenodo, enhancing metadata quality, discovery, and curation, while contributing to open-source infrastructure at the heart of global Open Science.

Your profile

Skills:

• Strong backend development skills (Python, Flask, REST APIs).
• Frontend development experience with modern frameworks (React).
• Experience working with relational databases (PostgreSQL) and search technologies (Elasticsearch/OpenSearch).
• Familiarity with containerisation and deployment (Docker, Kubernetes/OpenShift/Helm).
• Experience in collaborative software engineering (Git, CI/CD, testing frameworks).
• Ability to design modular, reusable, and maintainable software.
• Strong problem-solving and debugging skills in production systems.
• Excellent communication skills and willingness to contribute to open-source projects.
• 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 and data 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 Information

Job closing date: 10.10.2025 at 23:59 CEST.

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

Working hours: 40 hours per week

Target start date: 01-November-2025

Job reference: IT-CA-OSI-2025-190-GRAE

Field of work: Software Engineering and IT

What we offer

• A monthly stipend ranging between 5196 and 5716 Swiss Francs (net of tax).
• Coverage by CERN's comprehensive health scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Depending on your individual circumstances: installation grant; family, child and infant allowances; payment of travel expenses at the beginning and end of contract.
• 30 days of paid leave per year.
• On-the-job and formal training at CERN as well as in-house language courses for English and/or French.

About us

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on http://home.cern.

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success.