Electrical Test Engineer (PTC) - Power & Control Systems Electrical Engineer NASA Neil Armstrong Test Facility (ATF) Sandusky, OH HX5 is an award-winning provider of engineering, research and development, and technical services to clients such as NASA and the Department of Defense. Founded in 2004, HX5 is a fast-growing veteran- and woman-owned company with locations nationwide. The Test Facilities Operation, and Engineering (TFOME ) Team, which includes Troy7, Sierra Lobo, HX5, Amentum & MSM