Monitor and maintain HVAC and mechanical utility systems serving the battery plant and associated support buildings, including air-handling and exhaust systems, chilled-water and heating-hot-water systems, steam system and condensate pumps, valves, hydronic loops, industrial dehumidifiers, chillers, precision cooling/CRAC equipment, and related controls. The position provides hands-on mechanical leadership for HVAC and other MEP systems within the O&M scope, while coordinating closely with SK site stakeholders, production support teams, engineering, safety, security, fire protection, controls, and approved contractors.