Particle Accelerator Operator

What you'll do

We invite you to take your career to an exciting new level by joining the team of operators who run the CERN accelerator complex from the CERN Control Centre (CCC). The Operations Group is responsible for the exploitation of the entire CERN accelerator complex and its technical infrastructure, including the Large Hadron Collider (LHC), running a rich proton, antiproton and heavy ion experimental programme. You will be at the heart of the preparation and delivery of particle beams to the different physics programs at CERN. When not operating these complex machines, you will contribute to the development of applications and advanced tools to support and improve operation.

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Your responsibilities

Take part in the 24/7 shift team which runs CERN's accelerator complex.
Operate proton and/or ion accelerators (Linac3, Linac4, PSB, LEIR and/or PS) and the beam lines to the associated experimental facilities on a shift basis, ensuring the safe and timely execution of the physics schedule and obtaining the defined beam performance goals.
Work closely with accelerator physicists to set up and optimise the accelerator operation and to design, document, commission and optimise various operational scenarios.
Participate in the development of applications and advanced tools as part of a team or in collaboration with engineers or physicists within the OP group or within a specialised equipment group.
Outside periods of accelerator operation, assist the technical infrastructure team with the operation of CERN's technical infrastructure or other CERN equipment groups, if required.

Still here? Let's make a quick check about

Your profile

Initial work experience in a technical or scientific environment.
Experience in the field of physics, engineering or computing.
Basic knowledge of software engineering in a modern development language environment.
Familiarity with automation concepts and techniques, with an interest in improving operational efficiency and reliability.
Drive to work collaboratively in a multidisciplinary team and contribute to continuous operational improvements.
Experience in the field of operating large facilities and their associated hardware (e.g. measurement devices, power converter techniques, vacuum equipment, PLCs, work in controlled radiation areas, etc.) would be an asset.
Higher Technical or Administrative Diploma or equivalent in the field of Administration, Computer Engineering, Data Analysis (non-exhaustive) or a related field.

Your skills

Operation of accelerators.
Analysis and optimization of accelerator performance.
Testing and validation of detector, accelerator and beam line components.
Knowledge of programming techniques and languages.
Development of application software.
Cooperates constructively with others in the pursuit of team goals; balances personal goals with team goals.
Takes initiative beyond regular tasks and makes things happen.
Anticipates obstacles; assesses alternative solutions in order to have a fall-back plan.
Ensures that information, procedures and decisions are appropriately documented.
Takes responsibility for own actions and decisions.
Spoken and written English or French, with a commitment to learn the other language.

Ideal start date: 01/11/2026

Contract duration (in months): 60

Grade range: 3

Benchmark job: 300010 - Accelerator/Industrial Process Operations Technician

Job flexibility: Fully Onsite

Medical hazard

Shift work.
Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

A valid driving licence.
Shift work, including nights, Sundays and official holidays.

Global Benefits at CERN

A minimum net entry-salary of 5929 Swiss Francs per month, increasing in line with your years of relevant experience.
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, removal, travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.

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.
You have relevant qualifications and professional experience.
If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
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)
Any document you consider relevant to your application

Your CERNDepartment

The BE department is at the heart of CERN's accelerator complex.

Its mission is to lead the development, construction, and operation of advanced particle accelerators, and to provide cutting-edge technology solutions that enable new discoveries in fundamental physics. Committed to promoting a culture of excellence, creativity and collaboration, individuals from diverse backgrounds contribute to the advancement of science and technology, as well as engaging in scientific education, outreach, and broader knowledge and technology transfer initiatives.

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.