You will contribute to hazardous materials decontamination activities and civil engineering works across CERN’s buildings and underground infrastructures. In this role, you support the preparation, coordination and follow-up of interventions, working closely with engineers, technicians, consultants and contractors to ensure safe and compliant operations. You are involved in both planning and on-site activities, combining technical coordination with hands‑on follow‑up. You will join the Civil Engineering section (CE) within the Site Asset Management (SAM) Group.