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Mechanical Technician (in Radio Frequency for Ultra High Vacuum Installations) – (TTE Programme)

CERN has a vacancy for a Mechanical Technician (in Radio Frequency for Ultra High Vacuum Installations) – (TTE Programme)

  • Closing date: 31 May 2021
  • Switzerland | CERN
  • Date posted: 30 Apr 2021
  • Job type: Technicians/Engineering
  • Disciplines: Engineering & instrumentation | Computational science & software engineering 

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.

Job description

As a Mechanical Technician working in Radio Frequency for Ultra High Vacuum Installations, you will be a member of the Modulators, Klystrons & High-Gradient Structures (MKS) section at CERN, which manufactures and tests copper structures used for accelerating particles that work in Ultra High Vacuum (UHV). The structure dimensions are in the meter range, but the geometric tolerances are in the micron level. In the team, you will participate on the conception, fabrication, and installation of these structures. You will be responsible for the acceptance tests of the pieces that form the structure and the preparation of the pieces and tooling required for the final assembly.

You will be part of a team of 10-12 engineers and students.


In order to qualify for a place on the programme you will need to meet the following requirements:

  • You are a national of a CERN Member State or Associate Member State (
  •  You have a Technical Diploma as a Mechanical or equivalent (, and no more than 4 years’ relevant experience after finishing your diploma.
  • If you are currently studying, you are still eligible to apply, although you are expected to have obtained your qualification by the start of your appointment at CERN.
  • If you hold a BSc or MSc, you are not eligible. However you may be eligible for the Fellowship Programme.
  • You should have at least a working knowledge of English or French.


  • Assist on the mechanical assembly of parts for UHV under clean conditions.
  • Prepare of pieces for brazing.
  • Run acceptance tests, vacuum leak tests, visual inspections, using basic metrology.
  • Work in the conception and fabrication of specific tooling.
  • Interact with other services at CERN (metrology, surface treatment, main workshop).
  • Monitor the maintenance and operation of chillers and vacuum equipment.
  • Evaluate and repair (if appropriate) the copper and stainless-steel RF components.
  • Produce basic reports using Word, Excel or PowerPoint.

Specific skills required for this job:

  • Experience of milling and turning (machining processes).
  • Knowledge of conception of small pieces and tools.
  • Knowledge and awareness of health and safety policies.
  • Basic knowledge of MS Office package e.g. Excel, Word and PowerPoint.
  • Ability to work independently and take initiative.

Additional information

CERN would very much like to benefit from your expertise, commitment and passion.  In return, CERN will provide you with:

  • An employment contract of one year, renewable for a second year.
  • On-the-job and formal training at CERN as well as in-house language courses for English and/or French.
  • A monthly stipend of 4585 Swiss Francs per month (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: an installation grant, family, child and infant allowances as well as travel expenses to and from Geneva.
  • 2.5 days of paid leave per month.

This is how you can apply:

You will need the following documents (in PDF format) to complete your application:

  • A  CV. 
  • A scan of your latest relevant qualification (or a screenshot of the latest academic transcript obtained if the diploma is not yet obtained).
  • At least one reference letter (from a professor or previous employer) giving an overview of your academic and/or professional achievements. This should be as broad as possible.
    – You can upload these letters at the time of application if you have them to hand. You will also be provided with a link as soon as you have submitted your application to forward to your referees to upload their letters confidentially. Please note this must be done before the closing date.

All applications should normally reach us no later than 31 May 2021.


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