CERN - European Organization for Nuclear Research

Company Description

At CERN, the European Organisation 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.

Job Description

Introduction

The Engineering Department (EN) provides CERN with the engineering competences, infrastructure systems, and technical coordination required for the design, installation, operation, maintenance, and dismantling phases of the CERN accelerator complex and its experimental facilities.

The Accelerator Coordination & Engineering group (ACE) coordinates the activities for the interventions and changes to the LHC and its injectors.

The mechanical technical engineer participates in the pre-design and 3D integration (a.k.a 3D coordination or spatial integration) of accelerators at CERN, including major mechanical components, infrastructure, and systems. He/she is also involved in producing and maintaining these 3D integration studies. One of the largest accelerators is the Large Hadron Collider (LHC), with its 27 km long and 8 access sites, which has been operating since 2009 and will be upgraded in the next Long Shutdown from 2026 to 2030 (LS3).

He/she can lead 3D integration studies for projects and associated teams of designers (ex. graduates, students, industrial support) and prepares the documentation for the 3D integration studies under his/her responsibility and communicates it to all relevant parties.

Functions

As a mechanical technical engineer, you will:

• Perform 3D integration studies, assembling models from design offices (mechanical, technical infrastructure, civil engineering) using CATIA V5, and ensuring that the reserved space for transport and survey is available;
• Pre-design or contribute to the design simplification of the 3D integration studies of infrastructure (e.g. metallic structures, transport and handling components, etc.), general services (e.g. HVAC, electrical systems, etc.) and accelerator components, with respect to the interfaces from infrastructure and general services;
• Perform 3D laser scans and reverse engineering, in particular by using point cloud generated by laser scanner;
• Produce and/or control layout drawings;
• Report and prepare the relevant documentation for reporting to projects;
• Present the results of the studies during relevant meetings;
• Technically supervise work from industrial service, graduates and/or students.

Qualifications

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

Experience:

You have demonstrated experience in:

• Conducting 3D integration studies for large and complex facilities, ensuring proper interface between mechanical components and building infrastructure (PDM/PLM context);
• Performing reverse engineering using 3D laser scanning and processing point cloud data;
• Creating detailed 3D models of mechanical components;
• Producing technical 2D drawings.

You also have experience in:

• Using Computer-Aided Design (CAD) software, preferably CATIA V5;
• Managing standard CAD items within a Product Data Management (PDM) system;
• Supporting validation and approval workflows within a Product Lifecycle Management (PLM) system.

The following would be considered as assets:

• Experience with CAD format conversion and/or simplification;
• Knowledge of accelerator components.

Technical competencies:

• Integration of mechanical systems;
• Production of 2D drawings and 3D models: applying drawing standards;
• Design and analysis of mechanical structures.

Behavioural competencies:

• Achieving results:
  • having a structured and organised approach towards work;
  • being able to set priorities and plan tasks with results in mind.
• Communicating effectively:
  • ensuring that information, procedures and decisions are appropriately documented.
• Solving problems:
  • identifying, defining and assessing problems, taking action to address them.
• Building relationships:
  • being able to put self in the shoes of others in order to understand their needs and interests.

Language skills:

Spoken and written both English and French.

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 16.07.2025 at 23:59 CEST.

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 week

This position involves:

• Work in Radiation Areas.
• Interventions in underground installations.
• A valid driving licence.
• Stand-by-duty and work during nights, Sundays, and official holidays, when required by the needs of the Organisation.

Job grade: 4-5

Job reference: EN-ACE-INT-2025-116-LD

Benchmark Job Title: Mechanical Technical Engineer

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