Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration, and sustainment of advanced technology systems, products, and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. Lockheed Martin is seeking an emerging authority Guidance, Navigation and Control Engineer with an active Secret clearance for a position in Grand Prairie, TX. What You Will Be Doing PAC-3 Weapon Systems Integration Programs is looking for a Performance/ M&S engineer to support hardware-in-the-loop (HWIL) simulations for Integrated Air and Missile Defense (IAMD) systems. The successful candidate will understand how to plan and conduct successful HWIL testing and communicate status to senior leadership. This role will require onsite support full-time at Lockheed Martin’s Missiles and Fire Control headquarters in Grand Prairie, TX working a 4/10 Flex schedule. This position requires a current DoD Secret clearance, therefore, U.S. citizenship is required. Why Join Us. Do you want to be part of a company culture that encourages employees to build their career, leverage their knowledge while using cutting edge technology, and achieve challenging goals? We provide the foundation and resources to help you stay motivated, inspired, and productive. If you are driven, dedicated, and enjoy doing what you love, then we want you to join our journey and build a better tomorrow with you. We are committed to supporting your work-life balance and overall well-being, offering flexible scheduling options