Experienced Project Assistant (ATS)

About the role

CERN's Accelerator and Technology Sector (ATS) is looking for an experienced Project Assistant to join its ATS Directorate Office (ATS-DO Unit), which includes the Project Office, the main project teams and transversal activities. The role supports the HL-LHC Project, European projects, the ATS Specification Committee and other strategic projects and studies. It is fully onsite in Geneva, 40 hours per week, with a 24-month contract (extendable to 36 months) starting 1 January 2027.

Key responsibilities

• Coordinate and deliver complex European and strategic projects, covering planning, stakeholder engagement, milestones, risks, documentation, reporting and deliverables.
• Manage the end-to-end ATS Specification Committee technical review process, including workflows, schedules, procurement and audit compliance.
• Maintain project plans, track progress, consolidate status reports and manage documentation in EDMS, CERNBox and JIRA.
• Plan and run workshops, technical reviews and large events, handling logistics, follow-up and decision tracking.
• Coordinate communication and outreach for major projects, including communication plans and change management.

Required profile

• Nationality of a CERN Member or Associate Member State.
• Professional background in administration or event management (or related field).
• A Master's degree with 2 to 6 years of post-graduation experience, or a PhD with no more than 3 years of post-graduation experience.
• No previous CERN fellow or graduate contract.
• Demonstrated experience planning, coordinating and delivering workshops, meetings, reviews or large events, in an international and scientific or technical environment.
• Spoken and written English; commitment to learn French.

Required skills

• Organisation, planning and autonomous work in a multidisciplinary team.
• Ability to understand complex technical activities and quickly learn project matters.
• Attention to detail and flexibility.
• Proficiency in standard office software and collaborative digital tools.

What we offer

• Monthly net stipend of 6,372 or 7,004 Swiss Francs depending on degree.
• 30 days paid leave plus 2 weeks annual closure.
• Health insurance coverage and pension fund membership.
• Family, child and infant allowances and a relocation package.
• Contract extension up to 36 months and on-the-job training including language classes.