At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges. We are seeking a Guidance, Navigation, and Control (GNC) Engineer who will specialize in Modeling and Simulation of complex technical solutions. This person will join a highly skilled team of systems engineering technologists and algorithm developers supporting various contracts and IRADs within Missiles and Fire Control. Modeling & Simulation Engineer tasks include: * Design and documentation of model and simulation requirements and architecture * Develop, verify, and validate both complex models and simulations such as missile 6-degree-of-freedom simulations (6-DOF) and effects-based simulations * Evaluate system performance in complex scenarios and environments and verify system and subsystem level requirements * Perform critical studies, analyses, and test activities * Support ground and flight test efforts including Hardware-In-The-Loop (HWIL) activities * Support program reviews and technical interchange meetings with internal leadership and/or external customers Relocation assistance is possible for this exciting position.