About BAE Systems Intelligence & Security 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. Collaborate closely with engineers, production staff, and technical teams from both BAE and government partners Travel to project sites for system installation, verification, testing, and certification as needed.