The Maintenance Engineering Technician III is a skilled, self‑directed technical contributor responsible for the installation, troubleshooting, and preventive/corrective maintenance of site-wide equipment supporting operations across cGMP manufacturing, non‑GMP facilities, and laboratory environments. Maintains, operates, and optimizes critical and non‑critical utility systems (HVAC, controls, refrigeration, emergency power, electrical distribution, compressed air, medical gases, purified/WFI water, wastewater, and steam systems) in cGMP environments.