Technician for Refrigeration Systems

Job DescriptionIntroduction:The Engineering Department (EN) pushes forward the limits of technology so that physicists can carry out their research. Within the cooling and ventilation (CV) group of the EN department, you will join the LHC Section, which is in charge of the operation and maintenance of the cooling and ventilation systems of CERN’s accelerator complex and experimental areas. The activity includes the work site supervision for installation work and commissioning of new systems, upgrade of existing systems and consolidation of old systems.Are you a qualified technician, specialised in industrial cooling, ventilation & refrigeration systems? Contribute your skill and experience to the operation and maintenance of complex cooling plants in a unique environment hosting some of the world’s most complex technical installations. Join CERN’s Cooling and Ventilation operation team. Take partFunctions:As a technician, you will take part in the operation, maintenance, construction and modification works of cooling and ventilation systems that are essential for the operation of CERN scientific facilities.You will:Plan (by using the CMMS system), coordinate, supervise, check and perform preventive and corrective maintenance activities on cooling and ventilation systems.Perform operation activities to ensure appropriate running of the cooling, ventilation & refrigeration systems.Interact regularly with clients for all matters related to equipment under your responsibility.Propose and define the most appropriate solution to meet user needs in case of modification or renovation works.Technically coordinate contractors’ maintenance and installation work in compliance with contractual clauses and technical standards.Contribute to projects from the design phase until test and commissioning of new cooling and ventilation systems.Ensure that the technical documentation is kept up-to-date and compliant with the quality standards.Ensure the respect of safety rules for all interventions.Participate to the stand-by service.Follow up and regularly report on activities progress issues, schedule and costs.QualificationsHigher technical diploma or equivalent relevant experience in the field of Refrigeration or a related field.Experience:Demonstrated experience in maintenance, operation, and installation work on ventilation systems.Strong experience in maintenance, operation, and installation work on cooling and refrigeration industrial systems.Experience in the technical coordination of external contractors.Experience in the use of CMMS tools.Experience in low-voltage electrical systems.Initial experience in compressed air systems.Technical competencies:Operation and maintenance of HVAC plants and networks.Operation and maintenance of cooling water systems: and networks.Design, construction, operation and maintenance of detector cooling systems.Operation and maintenance of electrical circuits and networks.Organisation, planning and control: including supervision of work.Behavioural competencies:Achieving Results: taking appropriate corrective actions and adapting work / project plans if necessary.Communicating Effectively: giving praise and providing honest and constructive feedback.Demonstrating Flexibility: being willing to work on different projects simultaneously.Solving Problems: finding the information needed to solve problems; making objective judgments based on all the facts available.Working in Teams: cooperating constructively with others in the pursuit of team goals; balancing personal goals with team goals.Language skills:Spoken and written English or French, with a commitment to learn the other language.Additional InformationEligibility 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 11.02.2026 at 23:59 CET.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 weekJob Flexibility: Fully OnsiteThis position involves:Participation in a regular stand-by duty, including nights, Sundays and official holidays.Work in Radiation Areas.Interventions in underground installations.A valid driving licence.Work during nights, Sundays and official holidays, when required by the needs of the Organization.Shift work, when required by the needs of the Organization.Exposure to asbestos.Exposure to lead.Radiation worker, category A.Exposure to risk of falling from heights during scaffolding assembly and dismantling operations.Exposure to electromagnetic fields under certain exposure conditions.Shift work.Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.Job grade: 3-4Job reference: EN-CV-LHC-2026-8-LDField of work: Mechanical EngineeringBenchmark Job Title: Mechanical TechnicianGlobal BenefitsA 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 possibleAt 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 PARTMore information about us, here: careers.cern