Job Description Introduction: You will provide support to the Organisation in matters of Indoor Air Quality (IAQ) for occupational Health & Safety. This includes requirements for the design of air management systems, performing on-site workplace assessments and leading air quality studies for specific projects. Functions: Provide technical and safety requirements for the design and retrofit of ventilation and filtration systems. Conduct on-site workplace air quality assessments, measuring different indoor pollutants, analysing the results and proposing solutions. Investigate incidents related to air quality, perform root cause analysis, and recommend corrective actions. Lead complex Indoor Air Quality (IAQ) studies for high-risk and/or high-complexity projects. Perform ventilation / filtration rate calculations and airflow modelling. Develop IAQ guidelines, procedures, best practices and other engineering solutions for the Organisation. Act as Safety correspondent and become the single point of contact in matters of safety, for some CERN-specific projects.