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

We are looking for a motivated Electrical Technician to join our diverse team working on the development and operation of large-scale power electronics systems that energise CERN’s particle accelerators. These accelerators act as powerful microscopes, allowing scientists from around the world to explore the fundamental laws of nature.

You will collaborate closely with engineers, technicians, and specialists in power electronics and system integration, contributing to the design, assembly, installation, testing, commissioning, operation, and maintenance of multi-megawatt power converters and Static Var Compensators. If you are curious, hands-on, and eager to learn, you will find your place here.

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 equipment systems in all CERN accelerators, and are engaged in ambitious forward-looking R&D programs.

The Electrical Power Converter Group (EPC) in the Accelerator Systems Department (SY) is responsible for the electrical power systems for the entire CERN accelerator complex.

You will join the High-Power Converter Section, responsible for the high-power systems in the range between 1 MW and 150 MW.

Functions

As an Electrical Technician, you will:

• Contribute to the design and development of electrical subassemblies and electromechanical systems for multi-megawatt power converters, and static var compensators, including the preparation of 3D CAD drawings and electrical schematics.
• Assemble and/or supervise the assembly of electrical components and prototypes, and carry out installation activities for large-scale power conversion systems.
• Support testing and commissioning, including the preparation and execution of system tests, setup of instrumentation, and performance of measurements.
• Participate in the operation, maintenance, and troubleshooting of multi-megawatt power conversion systems, performing fault finding, repairs, and preventive maintenance as required.
• Prepare and update technical procedures, documentation, and reports related to design, testing, and maintenance activities.
• Follow established operational and safety procedures when working with high-power and high-voltage systems, ensuring a strong culture of safety and continuous improvement in the workplace.

Qualifications

Higher technical diploma or equivalent relevant experience in the field of Electrical and/or Electronics Engineering or a related field.

Experience:

Required experience:

• Proven experience in electrical assembly, wiring, cabling, and integration of industrial or laboratory equipment.
• Hands-on experience in the installation, commissioning, and maintenance of electrical and/or electronic systems.
• Use of instrumentation for electrical measurements, diagnostics, and troubleshooting.

Desired experience:

• Experience working with high-power and/or high-voltage systems.
• Basic knowledge of electronic circuits and Printed Circuit Board (PCB) design.

Technical competencies:

• Production of 2D drawings and 3D models: ability to read and produce electrical schematics and wiring diagrams; basic knowledge of 3D CAD tools for mechanical/electromechanical assemblies.
• Knowledge and application of instrumentation and measurement techniques: measurement tools like oscilloscopes, multimeters, power analysers, and similar.
• Construction, test and installation of power electronic components and systems.
• Operation and maintenance of power electronic components and systems.

Behavioural competencies:

• Managing self: working well autonomously; taking on activities and tasks without prompting.
• Achieving results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
• Solving problems: addressing complex problems by breaking them down into manageable components.
• Working in teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities.
• Communicating effectively: ensuring that information, procedures and decisions are appropriately documented.

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 Organisation. 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 11.01.2026 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 week

Job Flexibility: Fully Onsite

This 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.
• Exposure to electromagnetic fields under certain exposure conditions.
• Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.

Job grade: 3-4

Job reference: SY-EPC-HPC-2025-251-LD

Field of work: Electrical or Electronics Engineering

Benchmark Job Title: Electrical Technician