Safety Engineer for the CMS Experiment

What you'll do

As a member of the CMS Safety Office, you will participate in all safety-related activities at the CMS experimental sites during the Long Shutdown 3, when both the detector and the infrastructure will undergo major upgrades. In particular, you will take a leading role in the technical review of all CMS fire extinguishing systems and safety monitoring systems to assess their design, coverage and suitability for the CMS upgrade. You will contribute to the review, testing, and commissioning of the CMS Alarm Action Matrix in collaboration with all the relevant stakeholders, as well as organise regular reviews of the systems and activities and guide risk assessments for the collaboration’s teams.

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Your responsibilities

Coordinate and supervise the installation, integration, and commissioning of safety-related infrastructure for CMS across its underground experimental and surface facilities on the French and Swiss sites.
Organise and follow up on the assembly, deployment, and commissioning of the CMS environmental monitoring system based on sniffers.
Lead the technical review, consolidation, maintenance, and follow-up of the CMS fire protection systems.
Contribute to the definition, review, testing, and validation of safety system logic, in particular the CMS Alarm Action Matrix.
Interface with CMS Technical Coordination, subdetector teams, and safety link persons to ensure coherent implementation of safety requirements and proper integration of systems across multiple domains.
Support the preparation and follow-up of safety-related deliverables, including environmental monitoring systems and alarm management, ensuring traceability and consistency throughout the project lifecycle.
Participate in and guide activity reviews and related risk assessments within CMS.
Proactively contribute to the continuous improvements to the safety framework at the CMS experimental site, ensuring a safe working environment while streamlining safety processes and documentation to support the efficient execution of experimental activities.

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Your profile

Experience with fire protection systems or environmental monitoring systems.
Extensive experience in the installation, integration, and commissioning of safety-related technical systems, preferably in a complex or multidisciplinary environment.
Experience in field-supervision, including installation follow-up, testing, and commissioning of complex systems.
Track record in activity safety supervision, risk assessment, and coordination of multiple stakeholders.
Initial experience working with control and/or safety systems (e.g. monitoring systems, alarms, interlocks, or similar).
Knowledge of safety regulations and standards in an international environment.
Proven ability to work successfully within multinational and multicultural teams of scientists, engineers and technicians.
Master's degree or equivalent relevant experience in the field of Mechanical Engineering, Health, Safety and Environment Engineering or a related field. Certificates in Safety Management (e.g. Nebosh) would be an advantage.

Your skills

Safety conformity assessment.
Occupational safety and risk management.
Knowledge of design codes and compliance verification of mechanical equipment.
Maintenance management.
Process analysis, definition and improvement.
Operation and support of experimental facilities.
Drives work / projects along and sees them through to their conclusion.
Contributes to promoting a positive atmosphere in the team through an optimistic and constructive attitude; addresses issues.
Takes initiative beyond regular tasks and makes things happen.
Adapts quickly and resourcefully to shifting priorities and requirements.
Ensures that information, procedures and decisions are appropriately documented.
Spoken and written both English and French.

Ideal start date: 01/10/2026

Contract duration (in months): 48

Grade range: 6

Benchmark job: 200070 - Health, Safety and Environment Engineer

Job flexibility: Fully Onsite

Team supervision

Medical hazard

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

A valid driving licence.
Work during nights, Sundays and official holidays, when required by the needs of the Organization.
Interventions in underground installations.
Work in Radiation Areas.

Global Benefits at CERN

A minimum net entry-salary of 9236 Swiss Francs per month, 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.