We are looking for an experienced HVAC Site Manager with extensive heavy ductwork and cleanroom HVAC installation experience to manage site-based mechanical works on pharmaceutical and life sciences projects. The ideal candidate will have a strong technical understanding of GMP environments, containment systems, and critical HVAC infrastructure including AHUs, HEPA filtration, and environmental zoning. Key Responsibilities: Manage all site-based HVAC activities with a focus on heavy ductwork, including large-scale extract/supply systems, fire-rated ductwork, and pressure-controlled environments. Supervise the installation of cleanroom-grade HVAC systems (ISO 14644/Class (phone number removed) including HEPA filter housings, VAV boxes, and critical airflow balancing. Coordinate closely with project engineers, QA/QC, commissioning teams, and subcontractors to ensure compliance with GMP, FDA, and ISO standards. Review and interpret detailed mechanical/HVAC drawings, P&IDs, and cleanroom layouts to ensure accurate and compliant installation. Manage RAMS, site inductions, tool-box talks, and ensure adherence to strict HSE protocols. Oversee HVAC commissioning preparation and assist in the delivery of validation documentation (IQ/OQ). Monitor and report on site progress, subcontractor performance, and material delivery schedules. Represent the mechanical team in client and main contractor progress meetings. Requirements: M...