The Critical Systems Technician III – HVAC serves as the lead technician for all mission-critical mechanical services and maintenance under contract. This position is responsible for monitoring compliance with contractual commitments while providing technical leadership in the installation, service, maintenance, troubleshooting, and operation of mission-critical HVAC systems supporting data center environments.

Responsibilities include performing preventive maintenance, routine and emergency repairs, troubleshooting, maintaining Building Automation Systems, responding to after-hours service calls, mentoring lower-level technicians, participating in an on-call rotation, and ensuring the reliable operation of critical mechanical infrastructure.