Option 2: Certification from an accredited trade school or college in one or more of the following trades: electrical, plumbing, heating, ventilation, air conditioning (Certificate must be submitted with an application) AND two (2) years of full-time equivalent journey-level experience maintaining large commercial, large industrial or large institutional facilities, performing skilled tasks in one or more of the following trades: electrical, plumbing, heating, ventilation, and/or air conditioning. Must possess one of the following options: Option 1: Four (4) years of full-time equivalent journey-level experience maintaining large commercial, large industrial or large institutional facilities, performing skilled tasks in one or more of the following trades: electrical, plumbing, heating, ventilation, air conditioning.