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.

Job Description

Introduction:

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.

Functions:

  • 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.
  • Take a leading role in the integration, construction, and commissioning of the CMS environmental monitoring system.
  • Take the lead in the integration of the different elements of the accelerator in the forward region of the detector (beampipe vacuum pumping system, radiation shielding, etc.).
  • Write up technical specifications for the procurement of goods for the upgrade of the CMS detector.
  • Present your work to the CMS Collaboration via technical reports and talks at relevant conferences and workshops.

Qualifications

Master's Degree or equivalent relevant experience in the field of Mechanical Engineering or a related field.

Experience:

  • 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.
  • Initial experience in designing and building PLC-based data acquisition and control systems (preferably using Siemens hardware).

Technical competencies:

  • 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.
  • Knowledge of design codes and compliance verification of mechanical equipment.
  • Knowledge and application of instrumentation and measurement techniques.

Behavioural competencies:

  • Achieving Results: delivering high quality work on time and fulfilling expectations.
  • Learning and Sharing Knowledge: proposing ways to improve or streamline existing procedures, processes and methodologies.
  • Solving Problems: addressing complex problems by breaking them down into manageable components.

Language skills:

Spoken and written English or French, with a commitment to learn the other language.

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 07.05.2026 at 23:59 CEST.

Employment Conditions:

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

Working Hours: 40 hours per week

Job Flexibility: Fully Onsite

This position involves:

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

Job grade: 6-7

Job reference: EP-CMS-SSI-2026-86-LD

Field of work: Mechanical Engineering

Benchmark Job Title: Mechanical Engineer

Global Benefits

  • A competitive salary (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.

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!

More information about us, here: careers.cern

At Impactpool we do our best to provide you the most accurate info, but closing dates may be wrong on our site. Please check on the recruiting organization's page for the exact info. Candidates are responsible for complying with deadlines and are encouraged to submit applications well ahead.
Before applying, please make sure that you have read the requirements for the position and that you qualify. Applications from non-qualifying applicants will most likely be discarded by the recruiting manager.