About BAE Systems Electronic Systems BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Ability to learn or experience with inspecting circuit card assemblies, printed wiring boards, electrical components, and mechanical parts using common inspection tools which include calipers, micrometers, GO/NG fixtures, height gauges, pin gauges, and thread gauges.