JOB SUMMARY   Manages and supervises commercial construction and facility maintenance, including the bid process and specifications.   ESSENTIAL DUTIES Plans, schedules, assigns, supervises, and inspects work involving concrete, electrical, plumbing, HVAC, fueling equipment, signs, and repair. Supervises, trains, and evaluates employees performing skilled maintenance, construction, and repair work. Develops work schedules based on needs and changing priorities. Works from plans and develops specifications for putting jobs to bid. Writes orders for materials, identifies sources for materials and supplies, calls vendors for prices. Estimates mater