Mechanical Technical Engineer (SY-STI-TCD-2025-173-LD)

Job Description

Introduction:

We are looking for a mechanical systems technicalengineer to join a multidisciplinary team developing and upgrading some of the most advanced beam-intercepting devices in the world. From the High-Luminosity LHC upgrades to key facilities like n_TOF, AD, and HI-ECN3, you will play a hands-on role in projects that push the boundaries of engineering and science.

You will join the Accelerator Systems Department (SY ), which is responsible for the beam-related technical systems of the CERN accelerators. The SY teams design, build and operate systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D programmes.

As part of theSources Targets Interactions Group , and specifically theTargets, Collimators, and Dumps Section , you will help deliver safe, efficient, and high-performance solutions for some of the most intense particle beams on Earth.

Functions:

As a mechanical systems technical engineer, you will play a key role in the design, construction, upgrade, and maintenance of beam-intercepting devices across CERN’s accelerator complex.

After training, you will contribute to both hands-on technical work and coordination of major projects, including future facilities beyond the HL-LHC era.

Your responsibilities will include:

• Lead the assembly, installation, testing, and maintenance of LHC collimators and other key systems;
• Support the design and production of precision components and tools in collaboration with engineers and technicians;
• Operate and maintain beam-intercepting devices and related infrastructure;
• Develop tools and solutions for safe maintenance in radiation zones, including remote handling systems;
• Investigate equipment issues and implementing repairs and design improvements;
• Take progressive responsibility for target systems and test areas like n_TOF and AD, including their integration and optimization;
• Manage technical documentation, procedures, and specifications;
• Participate in procurement and supplier coordination for complex systems;
• Support decommissioning, inspection, and disposal of irradiated components.

Qualifications

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

Experience:

Required experience:

• Assembly and installation of complex mechanical systems, ideally in harsh environments;
• Managing complex systems and interfaces, with a focus on mechanical performance and reliability;
• Design and structural analysis of mechanical structures, including systems involving robotics or remote handling;
• Professional use of CAD tools (2D and 3D) to model, draft, and document mechanical components and assemblies.

Desired experience:

• Working in or around radiation-controlled environments;
• Technical procurement experience, including liaising with suppliers and managing specifications for complex systems.

Technical competencies:

• Assembly of mechanical structures and equipment;
• Knowledge and application of manufacturing methods and work preparation;
• Production of 2D drawings and 3D models;
• Specification and follow-up of technical aspects of a contract;
• Design and analysis of mechanical structures.

Behavioural competencies:

• Managing Self: working well autonomously; taking on activities and tasks without prompting; taking initiative beyond regular tasks and making things happen;
• Achieving Results: defining clear objectives, milestones and deliverables before initiating work/ project; delivering high quality work on time and fulfilling expectations;
• Working in the Interest of the Organization: demonstrating motivation for own work, being enthusiastic, involved and energetic in pursuing tasks;
• Communicating Effectively: expressing opinions, ideas and suggestions with conviction and in a logical/structured manner; keeping to the point.

Language skills:

Spoken and written English or French, with a commitment to learn the other language.

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 allMember States and Associate Member States .

This vacancy will be filled as soon as possible, and applications should normally reach us no later than at23:59 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;
• Exposure to lead;
• Use of certain mobile work equipment or equipment used for lifting loads (lifting equipment, bridge cranes, aerial work platforms, etc.) requiring a driving authorization;
• Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Job grade: 4-5

Job reference: SY-STI-TCD- -LD

Benchmark Job Title: Mechanical Technical Engineer

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