Software Developer for Control Systems

Software, Computer Science, Systems, C&I.

About us

At CERN, the European Organisation 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. 

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Job description

You will join a team that is responsible for the development and evolution of CERN's industrial control frameworks, JCOP and UNICOS, as well as for evaluating and validating new technologies for future control systems. These frameworks build on the commercial SCADA platform SIMATIC WinCC Open Architecture (WinCC OA) from Siemens, which forms the backbone of more than 800 mission-critical control systems.

Starting in a few months, the LHC detectors will undergo major upgrades requiring new control systems and additional functionality in the JCOP Framework. In this context, you will contribute to the development and evolution of the JCOP Framework and support the implementation of detector control systems.

Your responsibilities

  • Contribute to the development and evolution of the JCOP Framework used by the LHC experiments.
  • Implement and maintain software components, templates and tools based on WinCC OA and CERN control frameworks.
  • Integrate devices into supervisory control systems.
  • Design & Development of user interfaces with WinCC OA.
  • Prototype and test new solutions to improve reliability, maintainability and scalability of the frameworks.
  • Assist LHC experiments in the development, deployment and maintenance of their control systems.
  • Participate in code reviews, debugging and troubleshooting of control system applications.

Your profile

  • Experience or exposure to software development in distributed or modular systems.
  • Experience with modern programming languages and development tools (e.g. C/C++ or similar).
  • Knowledge of software engineering principles (version control GIT, testing, code quality, documentation, CI/CD).
  • Knowledge of Qt, Node.js or TypeScript would be an advantage.
  • Familiarity with industrial control systems, SCADA technologies, or CERN experiment online systems would be an advantage.

Skills

  • Proficiency in C/C++ programming.
  • Ability to learn and adapt to new technologies and frameworks quickly.
  • Ability to design, implement and debug software components in complex systems.
  • Strong analytical and problem-solving skills.
  • Ability to work in multidisciplinary teams and interact with engineers and scientists.
  • Good communication and documentation skills.
  • 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 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.

What we offer

  • A monthly stipend ranging between 6,372-7,004 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.
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Job ID Number: BE-ICS-STF-2026-105-GRAP
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Shortlisted
  • Deadline
    July 8th, 2026
  • Starting
    September 2026
  • Salary
    6,372 - 7,004 Swiss Francs per month (net of tax) + benefits
  • Degree required
    Master's/PhD
  • Location
    Geneva (Switzerland)
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Disciplines Accepted...
  • Computer Science
  • Control & Instrumentation
  • Software/Systems

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