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. Previous work experience with reading, interpreting and following: circuit schematics, PCB layouts, engineering drawings, BOMs, cable harnesses, wiring schematics, interface diagrams, layout drawings, mechanical drawings and CAD software.