Vacuum Technician (TE-VSC-BVO-2026-106-GRAE)

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  • Unbefristet
  • Vollzeit
  • 2 Tage her
Job DescriptionJoin the Vacuum, Surfaces and Coatings (VSC) Group, responsible for the design, construction, operation, maintenance, and continuous improvement of the Large Hadron Collider (LHC) vacuum system.As a Material and Surface Science Technician, you will contribute to the consolidation, upgrade, and maintenance of the LHC beam vacuum systems during Long Shutdown 3 (LS3), starting in 2026.Working as part of a dynamic operations team, you will play a key role in preparing the accelerator for its next phase of high-performance operation.Your responsibilities:
  • Take part in on-site interventions in the LHC tunnel, contributing to helium leak detection, local heating operations, and the activation of non-evaporable getter (NEG) coatings.
  • Carry out ultra-high vacuum pressure measurements and analyse residual gas composition with mass spectrometry, including identifying possible organic contaminants or air leaks.
  • Assist in preparing and updating technical documentation, tracking the NEG performance of the LHC vacuum system during LS3 activities.
  • Support quality assurance efforts by validating each step of the process and producing detailed intervention reports to ensure traceability and compliance
Your profile:
  • Basic understanding of ultra-high vacuum (UHV) principles.
  • Awareness of outgassing phenomena in vacuum systems.
  • Familiarity with simple techniques for creating and maintaining UHV environments.
  • Basic knowledge of NEG (Non-Evaporable Getter) behaviour and use.
  • Introductory know-how of quadrupole mass spectrometers (RGA) in UHV setups.
  • Basic knowledge of helium leak detection methods.
Skills
  • Able to operate basic ultra-high vacuum (UHV) gauges and read their data.
  • Able to assist with helium leak detection and note basic results.
  • Able to help prepare and update simple technical documentation.
  • Able to support on-site vacuum tasks, like NEG activation and checks.
  • Spoken and written English or French, with a commitment to learn the basics of the other language.
Eligibility criteria:
  • You are a national of a
. * By the application deadline, you have a maximum of two years of professional experience since graduation in Material and Surface Science (or a related field) and your highest educational qualification is a general secondary education diploma.
  • You have never had a CERN fellow or graduate contract before.
  • Applicants with a Bachelor's, Master's or PhD degree are not eligible.
Additional InformationJob closing date: 05.05.2026 at 23:59 CEST.Contract duration: 24 months, with a possible extension up to 36 months maximum.Working hours: 40 hours per weekJob flexibility: Fully OnsiteTarget start date: 01-September-2026This position involves:
  • Work in Radiation Areas.
  • Interventions in underground installations.
  • Residence in the immediate vicinity of the Organization's installations.
  • A valid driving licence.
  • Exposure to ionizing radiation and classified as category A.
Given the occupational health risks associated with this position, the selected candidate must obtain medical clearance before a contract offer is confirmed.Job reference: TE-VSC-BVO-2026-106-GRAEField of work: Material and Surface ScienceBenchmark job: 300090 - Mechanical TechnicianGlobal Benefits
  • A monthly stipend of 4687 Swiss Francs per month (tax free).
  • 30 days of paid leave per year plus 2 weeks annual closure.
  • Coverage by CERN's comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
  • Family, child and infant monthly allowances depending on your individual circumstances.
  • A relocation package (installation grant and travel expenses) depending on your individual circumstances.
  • Possibility to extend your contract up to 36 months.
  • On-the-job and formal training including language classes.
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