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. Developing software applications: Design, develop, test, and integrate software applications in languages such as C++, Python, and MATLAB, utilizing various technologies such as Cloud Native Technologies (e.g., Kubernetes, Harbor, Helm) and real-time operating systems (RTOS).