Demonstrated knowledge in at least one of the following areas: industrial maintenance, RCM, vibration analysis, fluid power, electrical, aviation maintenance, safety, instrumentation/electronic control systems, welding, heavy equipment operation, telecommunications, computerized numeric controls, boiler systems, heating/ventilation and air conditioning, English as a second language, and building construction and repair or other specialized manufacturing skill sets and experience as deemed appropriate by client demand. Candidates must demonstrate practical experience working in or around active roadway work zones and an understanding of hazards associated with highway construction, maintenance activities, and traffic management.