Mechanical Engineer for Detector Integration

Switzerland flag Geneva, Switzerland EP-CMS-SSI-2026-86-LD Ideal start date: 01/09/2026
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Before 07/05/2026 at 23:59 (Geneva Time)

What you'll do


You will join the CMS experiment Engineering & Integration team to work on the upgrade of the detector for High-Luminosity Large Hadron Collider (HL-LHC). Your activity will be focused on the construction and commissioning of the new detector environmental monitoring system and the engineering and integration of the Machine Detector Interface, for what concerns the integration of the HL-LHC accelerator elements in the detector forward region.


Your responsibilities

  • Participate in the design, construction, and installation of new detectors and their infrastructure
  • Contribute to the integration and commissioning of detectors
  • Work within the technical coordination team on the CMS experiment upgrades for the high-luminosity phase of the Large Hadron Collider (HL-LHC)
  • Contribute to the tasks of the CMS Engineering & Integration Office, by participating in concurrent multidisciplinary projects.

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Your profile

  • Demonstrated experience in the geometrical and functional integration of complex systems, using a multidisciplinary approach.
  • Proven ability in designing mechanical assemblies using 3D CAD tools (preferably CATIA), and in performing thermal and structural calculations of complex mechanical structures with FEA methods (preferably Ansys).
  • Strong background in writing technical specifications and following up on supplies.
  • Experience in planning and coordination of activities on the field.

Your skills

  • Assembly of mechanical structures and equipment:
  • Knowledge and application of numerical modelling in solid mechanics:
  • Integration of mechanical systems:
  • Production of 2D drawings and 3D models:
Ideal start date: 01/09/2026
Contract duration (in months): 60
Grade range: 6
Benchmark job: 200090 - Mechanical Engineer
Job flexibility: Fully Onsite

Medical hazard

  • Exposure to ionizing radiation and classified as category A
  • Exposure to electromagnetic fields under certain exposure conditions
Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

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

Global Benefits at CERN

  • A minimum entry-salary of 9236 Swiss Francs per month (tax free), 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 EP department conducts research in experimental particle physics in close collaboration with and supporting the wider scientific community working at CERN. This includes designing and operating experiments, developing and constructing detectors, acquiring and analysing physics data.

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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