JH Technical Services, Inc. / JH Staffing Services was founded in 1996 and is headquartered in Pittsburgh, PA. JH has become one of the area’s fastest growing and most respected staffing firms, and is focused on assisting both clients and candidates throughout the tri-state area. We offer contract, contract to hire, and permanent placement options. The industries that we specialize in include t...he following: Engineering, Architecture, Information Technology, Construction, Energy, Manufacturing, and Professional/Office. The Right Recruiter. The Right Measurements. The Right Candidates.