Software Developer - Beam Optics (BE-ABP-LNO-2026-132-GRAP)
Join the Linear and Non-Linear Optics (LNO) Section within CERN's Accelerator and Beam Physics (ABP) Group and help shape the future of the High-Luminosity Large Hadron Collider (HL-LHC). As part of the Optics Measurement and Correction (OMC) team, you will develop advanced software and analysis tools that enable precise beam-optics measurements and corrections, as well as improve commissioning procedures.
Your work will play a key role in ensuring the safe, reliable, and high-performance operation of the HL-LHC, contributing directly to the successful delivery of its novel physics programme.
Your responsibilities
- Maintain and extend the core OMC framework and toolset used during LHC commissioning and operation.
- Explore software solutions to improve the efficiency and capability of optics measurement and corrections in the LHC.
- Update accelerator model creation and correction algorithms to utilise new simulation tools.
- Explore the viability of automation for key measurement and analysis workflows, implementing solutions where possible.
- Develop new GUIs and analysis tools to be used in the CERN Control Centre during optics commissioning.
- Participate in, and contribute to the analysis of, optics measurements in the CERN accelerators.
Your profile
- Background in programming and software design, with experience in Python.
- Familiarity with version control systems and collaborative workflows (Github).
- Experience of GUI development.
- Knowledge of particle accelerator physics and operation would be an advantage.
Skills
- Software development. in Python.
- GUI development
- Ability to test, diagnose and optimise existing software.
- Structured approach towards work, good prioritisation skills to deliver results on required time-lines.
- Ability and willingness to share knowledge and participate in knowledge transfer activities.
- Strong teamwork and communication skills.
- Interest in developing and maintaining software solutions for applied physics, particularly the field of accelerator physics.
- Spoken and written English or French, with a commitment to learn the other language.
Eligibility criteria:
- You are a national of a CERN Member or Associate Member State.
- You have a professional background in Physics, Software Engineering (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.
Job closing date: 30.09.2026 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-January-2027
This position involves:
- Work during nights, Sundays and official holidays, when required by the needs of the Organization.
Job reference: BE-ABP-LNO-2026-132-GRAP
Field of work: Applied Physics
Benchmark job: 200140 - Applied Physicist
Global Benefits
- A monthly stipend between 6372-7004 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.
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