Java Engineer - Accelerator Controls (BE-CSS-DSP-2026-137-GRAE)

Responsibilities

• Contribute to the development, testing, and validation of software components of the CERN accelerator control system.
• Collaborate with stakeholders and users to understand requirements and support daily accelerator operations.
• Participate in the investigation, diagnosis, and resolution of operational problems in collaboration with physicists and accelerator operators.
• Collaborate with highly skilled software engineers both inside the BE-CSS group and across the CERN Accelerators & Technology sector.
• More information here .
• Your profile
• Initial experience in software development using Java/Spring.
• Experience writing clean, maintainable code and applying the related principles.
• Ability and motivation to learn and navigate large, complex codebases.
• Positive attitude and experience working in teams (academic or professional).

Requirements

• Advanced knowledge of Java/Spring (Python is a plus).
• Concurrency and multithreading.
• Relational databases.
• Linux and container technology (Kubernetes is a plus).
• Testing, diagnosing and optimisation of software.
• Monitoring and troubleshooting of operational software systems.
• 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 Engineer (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: 02.06.2026 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-September-2026
• Job reference: BE-CSS-DSP-2026-137-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!
• 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

Benefits

Additional Information

Within the Beams department, Controls Software and Services group, you will contribute to the evolution and consolidation of the operational tools used to control the accelerator complex. Working alongside a passionate team, you will help design and develop reliable backend solutions aligned with users' needs, supporting the operation of the world's largest particle physics laboratory.

Your Match

How well this role fits your profile.

Company Intel

What employees say

Worked at Cern? Share your experience