Full-Stack Web Developer (SY-EPC-CCS-2025-110-GRAP)

Job Description

Your responsibilities

Are you passionate about Full-Stack Web Development? Do you like working with state-of-the-art software technologies in a containerised software environment? Join the Tools Team within the Converter Controls Software (CCS) Section at CERN!

The SY-EPC-CCS Section within the Electrical Power Converters (SY-EPC) Group is responsible for the development and operation of software used to control power converters that drive current in the magnets of CERN's accelerators. In total, the group is responsible for more than 5000 power converters.

As part of the Tools Team at SY-EPC-CCS, you'll become responsible for a set of crucial expert web tools.

As part of your responsibilities, you will be:

• Working on front-ends in JavaScript (Vue3.js);
• Working on back-ends in Python (FastAPI);
• Working on databases in SQL (PostgreSQL);
• Contributing to the team's containerisation setup / workflow (Docker, Compose, Kubernetes, ArgoCD, Helm);
• Gathering and iterating over requirements and features with our users and stakeholders (Power Converter Experts);
• Providing support to the experts (users);
• Collaborating closely in a team of developers who are working on the full stack of the tools suite, using the Scrum framework;
• This role includes team supervision responsibilities.

More information here: https://epc-ccs.web.cern.ch/content/tools

Your profile

Skills:

• Experience with JavaScript/TypeScript (Vue.js);
• Experience with UI/UX design and development;
• Experience with Python (FastAPI);
• Experience with SQL;
• Experience with gathering user requirements;
• Knowledge of or experience with DevOps (Docker, Compose, Kubernetes) would be an advantage;
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State .
• You have a professional background in Computer Science (or a related field) and have either:
  • a 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.

Additional Information

Job closing date: 24.07.2025 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-October-2025

Job reference: SY-EPC-CCS-2025-110-GRAP

Field of work: Software Engineering and IT

What we offer

• A monthly stipend ranging between 6287  and 6911  Swiss Francs per month (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.

We are on a Quest. A Journey into discovery like no other. Bring your expertise to our unique work and develop your knowledge and skills at pace. Join world-class subject matter experts on unique projects, in a Quest for greater knowledge and deeper understanding.

Begin your CERN Quest. Take Part!

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.