Mechanical Technician - ISOLDE targets (SY-STI-RBS-2024-3-GRAE)

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Graduate / traineeship

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Job Description

Your responsibilities

You will become member of the interdisciplinary target group (SY-STI-RBS) within CERNs Accelerator Systems Department, bridging across scientific fields such as nuclear physics, material science, atomic physics and chemistry. With more than 50 years of experience in the domain of radioactive ion beam production and numerous international collaborations in this field, you can find an environment to accelerate your career.

At the ISOLDE experiment, the Frontend and Target are key devices because they are the first elements of the radioactive beam chain.
You will support the design and prototyping for the future generation of these Frontends and Target bases.

In this position, you will use your knowledge of mechanical design and modern modeling tools (CATIA/SmarTeam) as well as your manual ability for clean assembly and test prototypes.

Specifically, you will:

  • propose improvements;
  • present results to your colleagues and write test reports in order to reach the optimal solution, in particular for the reliability, the material choice, the quality, the safety, the costs and the schedule; 
  • work on the 3D conceptual design of prototypes (sub-parts of the next generation of Frontends / Target bases for ISOLDE); 
  • work on the 2D production plans according to the ISO rules; 
  • Maintain contacts with CERN workshops and external suppliers;
  • Follow the production and the planning; 
  • Be responsible for the quality control of the received pieces; 
  • Perform Assembly, design review, modifications, basic machining tasks as well as tests and modifications. 

Your profile

Skills and/or knowledge

  • Knowledge of vacuum systems, material science and elementary science would be an added advantage;
  • Experience in machining pieces to a high-quality standard;
  • Ability to interpret drawings for the assembly of various pieces of equipment;
  • Experience in using CAD systems such as CATIA;
  • Experience in machining, assembling and testing of precision mechanics
  • Reading mechanical design drawings and specifications in terms of tolerance (ISO tolerancing system).
  • Fluent in French, the ability to work in English would be an advantage.

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 Technicien en Mécanique (or a related field) and your highest educational qualification is a general secondary education diploma.
  • You have never had a CERN fellow or graduate contract before.
  • Applicants with a Bachelor, Master or PhD degree are not eligible.

Additional Information

Job closing date: 14.04.2024 at 12:00 AM (midnight) CET.

Job reference: SY-STI-RBS-2024-3-GRAE

Contract duration: 24 months, with a possible extension up to 36 months maximum.

This position requires:

  • Work in Radiation Areas.

What we offer

  • A monthly stipend of 4556 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.

About us

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


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.

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Graduate / traineeship

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Geneva, GENEVA, CH

Genève , Switzerland