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. Our employees work on the world's most advanced electronics -from saving emissions in the City of Lights to powering the Mars Rover to protecting the F-35 fighter jet.