Software Engineer – Accelerator Controls

What you'll do

As part of the software team of the Machine Protection and Electrical Integrity group, you will work on the upgrade of the Beam Interlock System (BIS) and Safe Machine Parameters system (SMP), which are key protection systems for the safe and reliable operation of the whole accelerator chain.

Both systems are undergoing a major overhaul, starting from their components and extending to software elements: data acquisition, control, supervision and monitoring. While each have their own purposes, use-cases and domain specificities, the two systems share the same technical stack: low level C++ real-time controls application, Java data transformation layer, Python and Angular GUIs, and integrations within the wider CERN accelerator controls.

Key aspects of the job include extending the reference model of the SMP system, implementing the real-time controls application integrating with the SMP and BIS hardware elements, as well as the upper software layers (Java, Python, Angular), and facilitating their integration with other software systems and the accelerator controls environment.

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Your responsibilities

Contribute to the development, testing, and maintenance of software components for the BIS and SMP systems (real-time control, data processing, and user interfaces).
Support the collection of requirements and feedback from users and hardware experts; assist in maintaining and extending the SMP reference model.
Participate in deploying and validating software solutions in test environments connected to hardware systems.
Collaborate with team members and contribute to documentation and reporting activities.

Still here? Let's make a quick check about

Your profile

Experience in software development.
Basic understanding of backend development concepts; willingness to learn.
Familiarity with software development tools and practices such as Git; exposure to containers or CI/CD is a plus.
Experience working on team projects (academic or professional).
Interest in Agile methodologies (Scrum/Kanban) is an advantage.
Ability and motivation to learn and navigate complex, multi-language codebases.
Attention to code quality and eagerness to follow best practices.
Your studies focused on Computer Science or Software Engineering.

Your skills

Proficiency in Java and Python, C++ knowledge a plus.
Relational databases knowledge.
Proficiency in DevOps technologies and practices (CI/CD, containers, monitoring).
Strong willingness to learn, collaborate, and grow within a team environment.
Spoken and written English, with a commitment to learn French.

Ideal start date: 01/07/2026

Contract duration (in months): 24

Job flexibility: Hybrid

Global Benefits at CERN

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.

Let's get you ready

Be sure to meet the eligibility criteria

You are a national of a CERN Member State or Associate Member State. Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
By the application deadline, you have a maximum of 2 years of professional experience since graduation in the respective field and your highest educational qualification is either a bachelor’s or master’s degree. You must have a university degree and can’t hold a PhD.
You have never had a CERN fellow or graduate contract before.
Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

Your CV (English or French)
A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)
Any document you consider relevant to your application

Your CERNDepartment

The TE department specializes in maintaining world-class expertise in accelerator technologies, supporting R&D, and managing technical facilities to advance CERN's technological capabilities.

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!

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Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.