Mechanical Design Engineer for LHCb (EP-LCB-TC-2026-233-GRAE)

CERN; Genf; On-site; CHF 58,000 - 65,000; Full time

Benefits offered by this job

Swiss health insurance

CERN Pension Fund membership

30 days annual leave + 2 weeks closure

Relocation package

Job summary

CERN's LHCb Technical Coordination section seeks a Mechanical Technical Engineer to contribute to CAD modelling of the LHCb detector and to develop digital mock-up and twin methods to support installation, maintenance and operation across milestones.

The role requires 2+ years post-graduate experience in mechanical engineering, proficiency in 3D CAD (CATIA V5 preferred), and exposure to manufacturing and testing of mechanical systems. Onsite, Geneva, with CERN benefits.

Qualifications

• At least two years of professional experience since graduation in Mechanical Engineering (or related field).
• Experience in designing mechanical components and assemblies using 3D CAD software.
• Knowledge of CATIA V5, PDM/PLM environments, or structured engineering data management preferred.
• Exposure to machining of parts, assembly and testing of mechanical systems is advantageous.
• Familiarity with 3D scanning, reverse engineering or digital twin concepts is a plus.

Responsibilities

• Contribute to conceptual design and development of mechanical systems.
• Collaborate with physicists, engineers and technicians to translate requirements into practical solutions.
• Produce engineering documentation, technical specifications, 3D models and manufacturing drawings.
• Support manufacturing, assembly, testing and installation of equipment.

Skills

International teamwork

3D CAD modelling

2D drafting

ISO GPS knowledge

Basic programming

English/French language

Education

Bachelor's or Master's degree in Mechanical Engineering or related field

Tools

CATIA V5

PDM/PLM environments

Job description

You will join the LHCb Technical Coordination section of the LHCb group. You will be part of the LHCb design office, contributing to the CAD modelling of the LHCb detector and helping to develop LHCb digital mock-up and digital twin methodologies that will support installation planning, maintenance, and operation for the next milestones of the experiment.

Your responsibilities

• Contribute to the conceptual design and development of mechanical systems.
• Collaborate with physicists, engineers, and technicians to translate conceptual requirements into practical engineering solutions.
• Produce engineering documentation, technical specifications, 3D models, and manufacturing drawings.
• Support the manufacturing, assembly, testing, and installation of equipment.

Your profile

• Initial experience in designing mechanical components and assemblies using 3D CAD software.
• Knowledge of CATIA V5, PDM/PLM environments, or structured engineering data management; familiarity with these tools is considered an advantage.
• Exposure to the machining of parts, assembly, and testing of mechanical systems is considered an advantage.
• Familiarity with 3D scanning, reverse engineering, or digital twin concepts is considered an advantage.

Skills

Mandatory:

• Ability to work effectively in an international, multidisciplinary team with physicists, engineers, and technicians.
• 3D CAD modelling and 2D drafting skills, preferably using CATIA V5 (or an equivalent CAD system, with a willingness to learn CATIA).
• Good knowledge of mechanical drawing standards, dimensioning and tolerancing (ISO GPS), materials, and manufacturing processes.

Optional:

• Basic programming skills, ideally in JavaScript and/or Python.
• Interest in or experience with 3D web visualisation technologies (e.g. Three.js, WebGL, and the glTF format).
• Spoken and written English or French, with a commitment to learn the basics of the other language.

Eligibility criteria

• You are a national of a CERN Member or Associate Member State.
• By the application deadline, you have a maximum of two years of professional experience since graduation in Mechanical Engineering (or a related field) and your highest educational qualification is either a Bachelor's or Master's degree.
• You have never had a CERN fellow or graduate contract before.
• Applicants without University degree are not eligible.
• Applicants with a PhD are not eligible.

Job Description

You will join the LHCb Technical Coordination section of the LHCb group. You will be part of the LHCb design office, contributing to the CAD modelling of the LHCb detector and helping to develop LHCb digital mock-up and digital twin methodologies that will support installation planning, maintenance, and operation for the next milestones of the experiment.

Additional Information

Job closing date: 19.10.2026 at 23:59 CEST

Contract duration: 24 months, with a possible extension up to 36 months maximum.

Working hours: 40 hours per week

Job flexibility: Fully Onsite

Target start date: 01-January-2027

This position involves:

• Work in Radiation Areas.
• Interventions in underground installations.
• Radiation worker, category A.
• Exposure to electromagnetic fields under certain conditions.

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

Job reference: EP-LCB-TC-2026-233-GRAE

Field of work: Mechanical Engineering

Benchmark job: 301190 - Mechanical Technical Engineer

Global Benefits

• A monthly net stipend of either 5266 or 5793 Swiss Francs per month depending on your degree.
• 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 and travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 36 months.
• On-the-job and formal training including language classes.

Overview of CERN

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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