Primary responsibilities include advanced HVAC/mechanical troubleshooting and repair, BMS operation and troubleshooting, controls diagnostics and repair, preventive and corrective maintenance, system performance analysis, planned‑outage support, technical field leadership, technician mentoring, root‑cause troubleshooting, contractor coordination, Quick Path project support, and work‑order documentation. Provides advanced support for building automation system (BMS) operation and troubleshooting, using alarms, trends, points, schedules, and sequences to diagnose performance issues and failures in mechanical equipment, controls, sensors, actuators, communications, or programming.