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Particle Accelerator Operator (BE-OP-PSB-2023-64-LD)

Geneva, Switzerland
Closing date
14 Jun 2023

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Job Details

Company Description

At CERN, the European Organization 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. Find out more on

Job Description


Are you passionate about science, physics, engineering, computing or a related domain?

We invite you to take your career to an exciting new level by joining the team of operators who run the CERN accelerator complex in the CERN Control Centre (CCC). Join Team CCC! CERN, take part!

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 of particle beams for the different physics programs at CERN. See what life is like as an Operator in the CERN Control Centre by watching the video below.

(Link to the video:


As an accelerator operator of the proton synchrotron, you will:

  • Be part of the 24/7 shift team which runs CERN’s accelerator complex;
  • Oversee the operation of the proton synchrotron accelerator and the beam lines to the associated experimental facilities on a shift basis, ensuring the safe execution of the physics schedule and obtaining the beam performance goals;
  • Work closely with accelerator physicists to set up and optimize the accelerator operation and to design, document, commission and optimize various operational scenarios;
  • Participate in software and/or hardware related development as part of a team or in collaboration with engineers or physicists within the OP group or within a specialized equipment group;
  • Outside periods of accelerator operation, assist the technical infrastructure team with the operation of CERN’s technical infrastructure, if required.


Higher technical diploma or equivalent relevant experience in the field of physics, engineering, computing or a related field.


The experience required for this post is:

  • Initial work experience in a technical or scientific environment;
  • Experience in the field of physics, engineering, computing or a related domain;
  • Experience in the field of software engineering in a modern development language environment;
  • JAVA and/or Python experience would be an asset;
  • Experience in the field of operating facilities and their associated hardware (e.g. measurement devices, power converter techniques, vacuum equipment, PLCs, work in controlled radiation areas, etc.).

Technical competencies:

  • Knowledge of programming techniques and languages;
  • Development of application software;
  • Operation of a complex facility or process.

Behavioural competencies:

  • Solving Problems: finding the information needed to solve problems; making objective judgments based on all the facts available;
  • Managing Self: working well autonomously; taking on activities and tasks without prompting;
  • Communicating Effectively: ensuring that information, procedures and decisions are appropriately documented;
  • Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities;
  • Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements Instigating and promoting change as an opportunity for organisational development.

Language skills:

Spoken and written English or French: ability to draw up technical texts in one of the two languages. The candidate is expected to achieve proficiency in the other language with their first year of employment.

Additional Information

Eligibility and closing date:

Diversity has been an integral part of CERN's mission since its foundation and is an established value of the Organization. Employing a diverse workforce is central to our success. We welcome applications from all Member States and Associate Member States.

This vacancy will be filled as soon as possible, and applications should normally reach us no later than 12 midday CEST 14th June 2023. 

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

These functions require:

  • Work in Radiation Areas;
  • Shift work, including nights, Sundays and official holidays;
  • Interventions in underground installations;
  • A valid driving licence is required;
  • Stand-by duty, when required by the needs of the Organization.

Job grade: 3-4

Job reference: BE-OP-PSB-2023-64-LD

Benchmark Job Title: Accelerator/Industrial Process Operations Technician


CERN profileAt CERN, physicists and engineers use the world’s largest and most complex scientific instruments to study the basic constituents of matter – the fundamental particles – to probe the underlying structure of the universe.

Working at CERN
CERN is a truly unique organization. A genuine collaboration between countries, universities and scientists, driven not by profit margins, but by a commitment to create and share knowledge. At CERN, students, recent graduates and experienced professionals work together to push for immense scientific discoveries, answering some of life’s most complex questions and advancing the boundaries of human knowledge.

People are free to work creatively and to trust in, and rely on, their colleagues across the organization. History is being made at CERN – and the excitement is tangible, inspiring, overwhelming at times. It is the only place in the world that you can do this work in this way.

Why work for us
Today, CERN employs more than 2500 people, and if you visit us you will find more than 2500 different reasons why CERN is such a great place to work. Six key reasons that we believe will make you love working here are: challenge; purpose; imagination; integrity; collaboration; and quality of life.

Student and graduate schemes
CERN technical and administrative internships and graduate schemes offer international students and recent graduates the opportunity to work with world-class scientists and engineers on cutting-edge research in particle physics, computational science, life sciences, engineering, international relations, and more. Whichever route you take, it will be an extraordinary experience.

What we are looking for
To conduct experiments of this scale and importance, CERN needs people from various career levels and with a wide range of abilities, skills and competencies. We have job opportunities for students, graduates and experienced professionals, from apprenticeships to PhDs (and beyond). Whatever your background, field of interest or diploma level, CERN could be the place for you.

Geneva, Switzerland

Number of employees
2500+ staff members; several hundred on graduate and student programmes

Positions recently recruited for
Computing engineer, radiofrequency engineer, process operator in cryogenics, web developer, mechanical engineer, administrative assistant, system administrator, power electronics engineer, scientific writer, applied physicist and many more

Desired degree disciplines/class
From apprenticeship to PhD in a wide variety of domains

How to apply
Apply online at

Closing date
All year round

Tel +41 22 76 63 786

Find Us
+41 22 76 63 786
Esplanade des Particules 1
PO Box 1211
Geneva 23

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