Operations Engineer for cooling and ventilation systems (EN-CV-LHC-2024-29-LD)

  • Contract

Company Description

At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. Using the world's largest and most complex scientific instruments, they study the basic constituents of matter - fundamental particles that are made to collide together at close to the speed of light. The process gives physicists clues about how particles interact, and provides insights into the fundamental laws of nature. Find out more on http://home.cern.

Job Description


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, maintenance and development of cooling and ventilation infrastructure for LHC and its experiments.

Are you a qualified mechanical engineer, specialised in industrial cooling and ventilation installations? Contribute your skill and experience to the operation, maintenance as well as design and construction of highly complex large cooling and ventilation plants in a unique environment hosting some of the world’s most complex technical installations. Join CERN’s Cooling and Ventilation LHC team. Take part!



As a Mechanical Engineer, you will take a leading role in the operation, maintenance, design and construction of HVAC and cooling systems within the LHC Section.

You will:

  • Ensure the operation, maintenance and consolidation of complex mechanical equipment and systems.
  • Supervise the operation of machines and complex technical installations; plan, organise and manage the maintenance, repair, testing and modification of these machines and installations.
  • Define user requirements in collaboration with main stakeholders.
  • Carry out conceptual design phase work, leading the development work needed to validate concepts up to the drafting of the conceptual design specifications and writing reports.
  • Carry out technical design phase work, carrying out studies needed to finalise the design, up to the drafting of the technical design specifications and writing reports.
  • Manage projects including schedule and costs, throughout the work phase until the commissioning.
  • Ensure technical coordination and supervision of contractors in charge of installation construction.


Master's degree or equivalent relevant experience in the field of mechanical engineering or a related field.



  • Experience in the operation, maintenance, design, tendering, contract management, construction, test, commissioning, operation and maintenance of ventilation installations and their related hydraulic components and/or industrial cooling including experience in selecting related equipment and instrumentation.
  • Experience in project management.
  • Experience in contract management

The following competencies would be an asset:

  • Initial experience in industrial refrigeration.


Technical competencies:

  • Design and construction of cooling water systems: (raw, demineralised and chilled water) including test of plants and their associated equipment.
  • Design and construction of HVAC plants and networks: including test of plant and associated equipment.
  • Water cooling process design and analysis: as well as HVAC process.
  • Project management.
  • Contract management.
  • Operation and maintenance of HVAC plants and networks.
  • Operation and maintenance of cooling water systems.
  • Design, construction, operation and maintenance of detector cooling systems.


Behavioural competencies:

  • Achieving Results: driving work / projects along and seeing them through to their conclusion.
  • Communicating Effectively: ensuring that information, procedures and decisions are appropriately documented.
  • Working in Teams: building and maintaining constructive and effective work relationships.
  • Managing Self: working well autonomously; taking on activities and tasks without prompting.
  • Demonstrating Flexibility: readily accepting new tasks or work/projects. Adapting quickly and resourcefully to shifting priorities and requirements.


Language skills:

Spoken and written English or French: ability to draw up technical specifications in English and to make oral presentations in at least one of the two languages and an undertaking to acquire the other language rapidly.

Additional Information

Eligibility 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 09.04.2024 at 23:55.

Employment Conditions

Contract type: Limited duration contract (5 years). Subject to certain conditions, holders of limited-duration contracts may apply for an indefinite position.

These functions require:

  • 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.

Job grade: 6-7

Job reference: EN-CV-LHC-2024-29-LD

Benchmark Job Title: Mechanical Engineer

Please make sure you have all the documents needed to hand as you start your application, as once it is submitted, you will not be able to upload any documents or edit your application further

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