Operates, maintains, and repairs a variety of mechanical and power tools, equipment, and testing instruments, such as power saws, power sanders, drills, air compressors, paint sprayers, sewer augers, and various hand tools required for carpentry, plumbing, and maintenance, as well as electrical, air, water, and natural gas testing equipment, thermometers, voltmeters, ohmmeters, and pressure and vacuum gauges to locate and diagnose malfunctions of assigned systems and equipment. Performs a variety of technical maintenance, repair, installation, alteration, and construction activities involving carpentry, plumbing, roofing, painting, mechanical, heating, air conditioning, and electrical trades work to improve, maintain, and renovate City buildings and facilities, and fixtures; provides complex technical support to the Facilities Maintenance Division.