Performs advanced troubleshooting, repair, and maintenance of complex building automation and control systems, including variable frequency drives, machine controllers, boiler and chiller controls, air compressors, heat exchangers, fume hoods, and laboratory control systems. Diagnoses and configures FLN, BLN Ethernet, BACnet, P1, Modbus, KNX, and other control system networks. Performs calibration of sensors, controllers, flow meters, and other measurement devices while also handling basic mechanical, electrical, controls, and plumbing maintenance. Collaborates with Siemens support technicians, energy engineers, and other FSU personnel to diagnose and resolve complex system faults and maintain reliable building operations.