Mechanical Engineer for Vacuum Technology (TE-VSC-BVO-2026-155-GRAP)

Join CERN's Vacuum, Surfaces and Coatings Group and contribute to engineering projects supporting the Large Hadron Collider (LHC) experiments. As a Mechanical Engineer in the Experimental Vacuum team, you will work on the design, development, production and testing of ultra-high vacuum equipment around the ATLAS, ALICE, CMS and LHCb experiments. You will take part in projects from initial engineering concepts through design, simulation and prototyping to testing, installation and operational follow-up. Working alongside engineers, technicians and specialists from other disciplines, you will gain hands-on experience with complex mechanical systems in a unique scientific environment.

- Design and develop precision mechanical equipment for ultra-high vacuum applications. - Create 3D CAD models and perform structural, thermal and modal analyses to validate designs. - Follow projects through design, prototyping, manufacturing, assembly and testing. - Plan and carry out laboratory tests, including leak detection, residual gas analysis and vacuum performance measurements. - Work with CERN workshops, suppliers and technical teams to support production and quality control. - Contribute to the installation, commissioning and improvement of vacuum equipment for the LHC experiments. - Collaborate across engineering disciplines to solve technical challenges and deliver reliable solutions.

- Mechanical design and CAD (CATIA, Autodesk Inventor, SolidWorks or similar). - Engineering simulation and analysis (ANSYS or similar). - Precision mechanics, manufacturing, assembly or testing. - Vacuum technology or laboratory environments. - Experience with ultra-high vacuum systems, leak detection or residual gas analysis is an advantage, but you do not need experience in all these areas.

- Good foundation in mechanical engineering and design. - Interest in developing expertise in ultra-high vacuum and precision engineering. - Practical, curious and solution-oriented approach. - Clear communication and commitment to high-quality engineering. - Spoken and written English or French, with a commitment to learn the basics of the other language. Eligibility criteria: - You are a national of a CERN Member or Associate Member State . - You have a professional background in Mechanical Engineering (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.