Mechanical Engineer for Vacuum Technology

What you'll do

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.

Your responsibilities

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.

Still here? Let's make a quick check about

Your profile

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.
Your studies focused on Mechanical Engineering.

Your skills

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.

Ideal start date: 01/01/2027

Contract duration (in months): 24

Job flexibility: Fully Onsite

Employment conditions

Work in Radiation Areas.
Interventions in underground installations.

Global Benefits at CERN

A monthly net stipend of either 6372 or 7004 Swiss Francs per month depending on your degree and years of post-graduation 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 and travel expenses) depending on your individual circumstances.
Possibility to extend your contract up to 36 months.
On-the-job and formal training including language classes.

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, Lithuanian, Latvian, Cypriot, Croatian and Turkish nationals, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
By the application deadline, you have a master’s degree with 2 to 6 years of professional experience since graduation or a PhD with a maximum of 3 years of professional experience since graduation. You are not eligible with only a bachelor’s degree.
You have never had a CERN fellow or graduate contract before.
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)
A copy of your most relevant diploma or a certificate of achievement from your school (if you don't yet have your paper diploma)
Any document you consider relevant to your application

Your CERNDepartment

The TE department specializes in maintaining world-class expertise in accelerator technologies, supporting R&D, and managing technical facilities to advance CERN's technological capabilities.

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!

Ready To apply?

Be prepared with our resources and tips

All good?

Apply now Allow 15 minutes to complete your online application

Still have a doubt ? Here are the most frequently asked questions

What should I expect during my first week at CERN?

Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
How big would the team be?

The size of the team you'll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you'll have the opportunity to learn more about the team structure for the position you are applying for.
What is the working language at CERN?

The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
What support does CERN provide for relocation?

CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the “Salary, Benefits and Support“ page.
Do I need a visa to work at CERN?

Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
What would my salary be?

Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.