Mechanical/Electromechanical Technician (ATLAS ITk Upgrade)

About the role

CERN's ATLAS Team builds the future silicon ATLAS Inner Tracker (ITk); the Detector Technologies (DT) team focuses on the Pixel Outer Barrel. You will join the Engineering Office Section (EP-DT-EO) and work with the ATLAS Group and the Technical Coordination Team on the design and construction of the ITk Pixel Outer Barrel. The role is fully onsite at CERN, grade 3-4, with a 36-month contract starting ideally on 01/01/2027.

Key responsibilities

• Take part in producing, testing and installing the Pixel Outer System services and their support structures (e.g. trolleys).
• Help design, manufacture and install temporary services and infrastructure for testing during Pixel Detector integration.
• Integrate the Pixel Outer System and insert it into ITk in the SR1 cleanroom, helping develop and fabricate the tooling.
• Support the ITk installation in the ATLAS cavern, preparing Pixel services and making connections after insertion.
• Document manufacturing and installation procedures and QC information on tools and parts to ensure traceability.

Required profile

• Demonstrated experience in precision machining of metallic and non-metallic parts, conventional and non-conventional methods.
• Good understanding of mechanical and electrical drawings, including geometrical tolerances.
• Experience assembling complex, high-precision mechanical systems and installing cable bundles and harnesses.
• Experience with structural joining, especially adhesive bonding and orbital welding.
• Higher technical diploma or equivalent experience in Precision Mechanics or a related field.
• Valid driving licence; willingness to work in radiation areas, underground installations and on nights, Sundays and holidays when needed.
• Nationality of a CERN Member State or Associate Member State; applicants who have held a Staff contract at CERN are ineligible.

Required skills

• Precision machining and CNC machine operation (previous CNC experience is an asset).
• Use of CAD software (Catia V5) and CAD-CAM programming (WORKNC) are assets.
• Production of 2D drawings and 3D models with ISO dimensioning and tolerancing.
• Spoken and written English or French, with a commitment to learn the other.

What we offer

• Minimum net entry salary of 5,929 CHF per month, rising with experience.
• 30 days paid leave plus 2 weeks annual closure.
• Health insurance covering yourself, spouse and children, and membership of the CERN Pension Fund.
• Family, child and infant allowances and a relocation package depending on circumstances.
• Contract extendable up to 8 years, with eligibility for an indefinite contract.