Mechanical Technician for CMS Detector Upgrades

What you'll do

As a mechanical technician, you will contribute to upgrade projects of the CMS detector, covering a broad range of responsibilities. These include workshop-based mechanical work, installation of detector systems, and the design and use of tooling for the removal and installation of CMS sub-detectors, as well as radioprotection duties in experimental areas and associated laboratories.

You will also take on coordination and operational responsibilities within the CMS Technical Coordination team, working closely with sub-detector groups and CMS technical support teams.

Your responsibilities

Take responsibility for activities related to safety and radioprotection for subdetector removal and installation, working with CMS safety officers and subdetector teams, operating in radioprotection-classified areas, and applying safety rules.
Manage a mechanical workshop, advising and assisting CMS subdetector teams, ensuring the availability and proper use of equipment and tools, and supplying consumables.
Provide technical support and hands-on assistance to CMS subdetector project teams operating within the CMS laboratories at CERN, in the fields of mechanical manufacturing, assembly, structures, and welding.
Take part in the development, testing, on-site installation, and on-detector operation of custom tooling for subdetectors, working with subdetector technical teams.
Operate and maintain hydraulic, mechanical, and electromechanical systems.
Organise and supervise the storage of subdetector equipment in CMS-reserved spaces at CERN, ensuring proper inventory and space management.
Assist the territorial safety officer of the building where the mechanical workshop is located, supervising work requested on infrastructure for general safety, and using a mobile crane and forklift when needed.
Serve as the technical contact for mechanical activities with subdetector teams and for space areas under your responsibility, reporting regularly to the Technical Coordination managers.

Still here? Let's make a quick check about

Your profile

Experience in radioprotection and the ability to work in classified areas.
Proven ability to manage a mechanical workshop, including the use of standard machines and tools.
Strong organisational skills for coordinating teamwork and on-site technical activities.
Proficiency in reading 2D and 3D technical drawings and manufacturing mechanical parts accordingly; experience in producing 2D and 3D drawings is an asset.
Solid background in the design, construction, and assembly of mechanical components and customised tooling.
Experience in the installation of structures and the use of specialised tooling for handling large equipment.
Ability to work effectively within multidisciplinary teams.
Proficiency with the operation and maintenance of hydraulic, mechanical, and electromechanical systems is considered a plus.
Higher technical diploma or equivalent relevant experience in the field of Mechanics or Manufacturing Methods or a related field.
Trainings/certificates considered a plus: welding certificate, radioprotection formal training, hydraulic certificate.

Your skills

Knowledge and application of manufacturing methods and work preparation.
Assembly of mechanical structures and equipment.
Manufacturing of mechanical parts.
Integration of mechanical systems.
Team management.
Knowledge of regulatory framework and best practice in radiation protection.
Defines clear objectives, milestones and deliverables before initiating work/ project.
Ensures that information, procedures and decisions are appropriately documented.
Takes responsibility for own actions and decisions.
Is willing to work on different projects simultaneously.
Builds and maintains constructive and effective work relationships.
Spoken and written English, with a commitment to learn French.

Ideal start date: 01/07/2026

Contract duration (in months): 60

Grade range: 3

Benchmark job: 300090 - Mechanical Technician

Job flexibility: Fully Onsite

Team supervision

Medical hazard

Exposure to ionizing radiation and classified as category A.
Exposure to electromagnetic fields under certain exposure conditions.
Exposure to risk of falling from heights during scaffolding assembly and dismantling operations.
Exposure to lead.

Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Employment conditions

A valid driving licence.
Shift work, when required by the needs of the Organization.
Work in Radiation Areas.
Interventions in underground installations.

Global Benefits at CERN

A minimum entry-salary of 5929 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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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.