Mechanical Fabrication Engineer (EN-MME-FS-2025-243-LD)

About the job

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

Join a multidisciplinary project team designing, fabricating and testing a new generation of components for the High-Luminosity Large Hadron Collider (HL-LHC).  
 
Be in charge of fabricating the new HL-LHC cryogenic distribution lines (QXL), relying on a wide range of technologies, either at CERN or through subcontracting in industry.  
 
Fabrication methods, state-of-art machining, sheet-metal forming, welding, pressure vessels, ultra-high vacuum technology, contract management and fabrication follow-up, safety, reliability, product lifecycle management are just a few of the key words related to this position.? 

Functions

• Manage the fabrication of mechanical components and assemblies subcontracted to CERN industrial suppliers for the Cryogenic Distribution Lines for the HL-LHC project.
• Lead activities propaedeutic for fabrication, such as defining and procuring suitable raw materials and standard components, prepare fabrication sequences and welding procedures (welding book) and define QA-QC in line with relevant standards.
• Contribute to the mechanical design of components and equipment for accelerators, focusing on manufacturing drawings, for the Cryogenic Distribution Lines for the HL-LHC project. 
• Participate in a multi-technology project, in close interaction with other engineering teams and services. 
• Provide technical advice to stakeholders on fabrication methods and design (design for manufacturing). 
• Prepare and manage documentation such as technical specifications, presentations, and technical reports, 
• Report on project activities advancement, providing time, costs and resources estimates for fabrication.

Qualifications

Master's degree or equivalent relevant experience in the field of Mechanical Engineer or a related field.

International Welding Engineer (IWE) Diploma (desired).

Experience:

• Demonstrated experience in mechanical fabrication and related methods and processes particularly welding as well as machining, metal sheet working and mechanical assembling, applying industrial standards, in a professional context within industry or research centres. 
• Demonstrated experience with quality management processes: knowledge of quality control procedures and standards applicable to mechanical production such as metrology, NDT. 
• Demonstrated experience in reading and interpreting technical drawings relying on ISO GD&T standard. 
• Experience in preparing technical reports and technical specifications. 
• Experience in fabrication of pressure vessels, vacuum chambers and cryogenics applying relevant International Standards (e.g. PED, EN 13480, EN 13445) would be an asset. 
• Initial experience in coordinating fabrication projects, from design-for-manufacturing studies through prototyping, testing, and production follow-up would be an asset.

Technical competencies:

• Production of 2D drawings and 3D models: ISO dimensioning and tolerancing;
• Contract management;
• Knowledge and application of manufacturing methods and work preparation;
• Knowledge and application of joining techniques: welding;
• Design and construction of cryostats.

Behavioural competencies:

• Achieving Results: having a structured and organised approach towards work; being able to set priorities and plan tasks with results in mind.
• Demonstrating Flexibility: adapting quickly and resourcefully to shifting priorities and requirements.
• Managing Self: using time efficiently and effectively.
• Solving Problems: adopting a pragmatic approach; understanding the value of adopting generic rather than 'gold -plated' technical solutions.
• Working in Teams: working well in groups and readily fitting into a team; participating fully and taking an active role in team activities.

Language skills:

Spoken and written English, with a commitment to learn 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 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 09.12.2025 at 23:59 CET.

Employment Conditions

Contract type: Limited duration contract (4 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:

• Work in Radiation Areas.
• A valid driving licence.
• Work during nights, Sundays and official holidays, when required by the needs of the Organisation.
• Shift work, when required by the needs of the Organisation.

Job grade: 6-7

Job reference: EN-MME-FS-2025-243-LD

Field of work: Mechanical Engineering

Benchmark Job Title: Mechanical Engineer