Operate and maintain site-critical Engineering systems and equipment that supply the facility with heat, utility and conditioned water, ventilation, air conditioning and other environmental and critical systems in accordance with diagrams, operating manuals, industry best practices, and manufacturers specifications. Qualifications Applicant must have a high school diploma or GED with a minimum of 4+ years of experience working with complex HVAC systems and equipment including chillers, boilers, package units, VAV systems (direct digital, pneumatic and automated control systems).