Mechanical Engineer (TE-CRG-ME-2023-116-GRAP)

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Job Description

As a Mechanical Engineer in the Technology Department (TE), Cryogenics Group (CRG), Mechanical and Engineering support section (ME), you will participate in the Hi-Luminosity upgrade of the LHC working on tasks relating to the dismantling and modification of the vacuum insulated cryogenic line in the LHC tunnel (QRL):

  • Dismantling of the QRL in Point 1 and Point 5:
    • Support the project engineer to complete the definition of the project:
      • Collect, coordinate and document technical information;
      • Perform technical studies and investigations to define the requirements and constraints;
      • Develop the specialized tools and techniques required to complete complex dismantling tasks accounting for the constrains imposed by the LHC tunnel environment.
    • Produce the technical specifications required to place contracts with industry for the work;
    • Collaborate with the HL-LHC project office to integrate the work into the schedule for Long shut down 3 (LS3);
    • Collaborate with CERN radiation protection group to coordinate the radiation protection aspects, relating to dismantling techniques and the management and recycling of QRL components classified as radioactive waste;
    • Develop the strategy for the disposal and storage of cryogenic equipment removed from the LHC tunnel;
    • Coordinate the project documentation;
    • Participate to the Design Reviews and project status meetings.
  • Rework of existing QRL components for reuse with the HL-LHC cryogenic distribution system (QXL):
    • Direct Current Super Conducting Link (DSL):
      • Complete the definition of the modifications.;
      • Support the design and manufacture of new equipment, specifically the cryogenic splice box and mechanical supports.
    • Q5 Service Module and related pipe elements:
      • Define the requirements, plan the upgrade and organize the supply of components.
  • Production of new cryogenic systems for the QRL:
    • Q4 Magnet Cryogenic Service Module:
      • Support the project engineer to complete the specification and follow the production with the supplier.
    • Special Step and Pipe elements:
      • Support the project engineer to define the requirement and sourcing;
      • Complete the specification and follow the production with the supplier.

More information here:

Your profile

    Eligibility criteria:

    • You are a national of a CERN Member or Associate Member State.
    • You have a professional background in MSc in field of mechanics, thermodynamic (or a related field) and have either:
      • a Master's degree with 2 to 6 years of post-graduation professional experience;
      • or a PhD with no more than 3 years of post-graduation professional experience.
    • You have never had a CERN fellow or graduate contract before.

    Skills and/or knowledge

    • Knowledge of mechanical design of systems and structures;
    • Knowledge of thermodynamics and fluid dynamics;
    • Experience with engineering documentation and projects;
    • Fluent in English, the ability to work in French would be a plus.

    Additional Information

    Job closing date: Tuesday 24 October at 23h59 CET

    Job reference: TE-CRG-ME-2023-116-GRAP

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

    Target start date: 01-January-2024

    This position requires:

    • Work in Radiation Areas.
    • Interventions in underground installations.
    • A valid driving licence.

    What we offer

    • A monthly stipend ranging between 6194 and 6808 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: 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

    We are on a Quest. A Journey into discovery like no other. Bring your expertise to our unique work and develop your knowledge and skills at pace. Join world-class subject matter experts on unique projects, in a Quest for greater knowledge and deeper understanding.

    Begin your CERN Quest. Take Part!


    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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    Geneva, GENEVA, CH

    Genève , Switzerland