Mechanical Engineer – ATLAS ITk Pixel Detector

About the role

CERN's ATLAS Team contributes to the construction of the future silicon ATLAS Inner Tracker (ITk). The Detector Technologies (DT) team focuses on the Pixel Outer Barrel for the ITk, covering design, prototyping, assembly of support structures and tooling, and final detector integration, installation and testing. As a mechanical engineer in the Engineering Office Section (EP-DT-EO), you will work with the ATLAS Group and the Technical Coordination Team on the design, construction and installation of the ATLAS ITk Pixel Outer System. The ideal start date is 01/01/2027, on a fully onsite contract of 54 months.

Key responsibilities

• Design precision tooling for the integration, testing and installation of the ITk Pixel Outer System (Outer Barrel, Endcaps and Inner System Support Tube)
• Develop service installation procedures and tooling, including temporary service management solutions for testing
• Verify component and tooling designs against standards and best engineering practice, performing analytical and numerical calculations
• Develop, document and implement tools and procedures for integration and installation of detector components and services
• Take part in detector integration in the ATLAS SR1 cleanroom and in preparation for installation on surface and in the cavern
• Prepare technical specifications for components and tools, follow up their production, acceptance and installation
• Support preparation of and take part in the ATLAS ID detector extraction

Required profile

• Proven experience designing precision mechanical components and assembly tools for complex systems
• Experience using CAD software for 3D modelling of large assemblies; Catia V5 proficiency is a plus
• Experience producing 2D technical drawings to standards such as ISO Geometrical Product Specifications (GPS)
• Hands-on experience building and testing mechanical systems, and drafting technical specifications, assembly procedures and engineering reports
• Experience assembling sensitive equipment in a clean room and using orbital welding is advantageous
• Master's degree or equivalent in Mechanical or Aerospace Engineering or a related field
• Nationality of a CERN Member State or Associate Member State; applicants from Pakistan, Lithuania, Latvia, Cyprus, Croatia and Turkey are excluded
• Previous CERN staff contracts are not eligible; a valid driving licence is required

Required skills

• Design and analysis of mechanical structures
• Production of 2D drawings and 3D models with ISO dimensioning and tolerancing
• Integration of mechanical systems
• Numerical modelling in solid mechanics
• Joining techniques and welding
• Spoken and written English, with a commitment to learn French

What we offer

• Minimum net entry salary of 9,236 Swiss Francs per month, rising with experience
• 30 days of paid leave plus 2 weeks annual closure
• Health insurance and pension fund membership
• Family, child and infant allowances
• Relocation package depending on circumstances
• Contract extendable up to 8 years, with eligibility for an indefinite contract