Job Description Within the Electronic Systems sector of BAE Systems, Inc., the Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) business area develops the critical systems that sense, control, exploit, and disseminate actionable information to the warfighter. The portfolio is diverse spanning a highly diverse portfolio of commercial and defense products - from open-architecture hardware and software and emerging RF technologies to signals intelligence, signal exploitation, and weapon data link capabilities.