Software Engineer at CMS Experiment (EP-CMO-2026-11-GRAE)

JobsCloseBy Editorial Insights

This CERN Software Engineer role with the CMS Experiment places you in the CMS PPD Team to operate and improve data tools, maintain high service availability during data taking, and enable DevOps workflows for a large user community. Core requirements include Python and C++ programming, Oracle database experience, and familiarity with software management and CI/CD; strong teamwork and communication are essential. Eligibility is strict: citizen of a CERN Member or Associate Member State, no more than two years post graduation, a Bachelor’s or Master’s degree, and no prior CERN fellowship or PhD. Apply by 12 February 2026 via the CERN careers site; benefits include a CHF stipend, hybrid work, relocation aid, and training. Tips: tailor your CV to showcase DevOps, data operations, and user support; quantify impact; highlight collaboration with scientists and willingness to learn French.

Job Description

In this role, you will take part of the CMS Experiment Physics Performance and Datasets (PPD) project Technical Support Team. You will have exposure to advanced data operations, large-scale service availability, and complex workflows providing strong experience in DevOps practices at the frontier of science and technology.

Your responsibilities

• Operate, maintain, and improve multiple tools in operation in order to maintain a high level of service availability during data taking, monitoring and analysis.
• Work closely with CMS scientists of varying technical backgrounds to support operations, assist with development, and help define new feature requirements.
• Collaborate with software, database, and IT experts to integrate tools in a sustainable way with community support.
• Develop, deploy and maintain services for a large community of users.
• Contribute to the production process from technical design up to user support.

More information here.

Your profile

• Programming experience.
• Experience with database management and operation.
• Experience with software management, continuous integration and deployment.

Skills

• Proficiency in both Python and C++.
• Oracle Database knowledge.
• Knowledge of Machine Learning is considered a plus, but not mandatory.
• Knowledge of High Energy Physics is considered a plus, but not a mandatory.
• Strong team collaboration skills, and effective communication skills in a professional setting.
• 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 IT, Computer Science or 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.

Additional Information

Job closing date: 12.02.2026 at 23:59 CET.

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-April-2026

Job reference: EP-CMO-2026-11-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