Guidance Navigation and Controls Engineer (Early Career) - Millennium Space Systems Company: Millennium Space Systems Guidance Navigation and Controls Engineer (Early Career) - Millennium Space Systems Millennium Space Systems (MSS), a part of Boeing Defense, Space and Security (BDS) is seeking a Guidance Navigation and Controls Engineer (Early Career) to support the Engineering team in El Segundo, CA! Job Summary The Guidance, Navigation, and Controls (GNC) Team delivers the GNC subsystem f