Build engineering staffing models by site and by portfolio: role mix (Chief Engineer, Critical Facilities Manager, Lead/Shift Engineer, Critical Facilities Engineer, Controls/BMS Technician, Electrical and Mechanical Technicians, Fire Life Safety specialists, EHS and Compliance roles), FTE counts, shift rotations, relief factors, vacation and absence coverage, and overtime assumptions. Solution the maintenance program across all critical systems — MV/LV electrical distribution, switchgear, UPS and battery plant, static transfer switches, PDUs, generators and fuel systems, chillers, CRAC/CRAH units, pumps, cooling towers, liquid cooling and direct-to-chip systems for AI/HPC densities, BMS/EPMS, fire detection and suppression, and building envelope.