Minimum Qualifications. High School diploma or recognized equivalent and one journeyman level industrial/commercial craft/trade as approved by Property Services Leadership (i.e. Plumbing, Mechanical, HVAC, Structural, Instrumentation/Electronics, Refrigeration, Electronics/Fire Alarms) demonstrated by one of the following. . . Texas state license or approved equal license with two years of experience at journeymen level. . . Recognized apprentice...