An HVAC Controls Engineer is responsible for designing, installing, and maintaining control systems that regulate heating, ventilation, and air conditioning (HVAC) systems in buildings. They program, test, and troubleshoot automated control systems to ensure optimal energy efficiency and indoor climate conditions. Their role often involves working with building automation systems (BAS), sensors, actuators, and software to monitor and adjust HVAC performance. Additionally, they collaborate with mechanical engineers, technicians, and facility managers to optimize system functionality and ensure compliance with industry standards.