Guidance, Navigation & Control Engineer (Senior, Level III) - Secret

About the Role As a GNC Sr Engineer, you will join the GN&C team on the Next Generation Interceptor (NGI) program. In This Role, You Will Apply missile guidance, navigation, and control expertise to modeling and simulation Integrate Matlab/Simulink models into a 6-DOF C++ simulation Develop high fidelity models and simulation software Build new source code in C++ and Python Modify code in C++, C, Matlab, Simulink, Fortran, Python, Linux shell, and YAML Create unit tests Execute simulation software on a high performance computing cluster including Linux systems or VMs Work in an Agile DevOps environment with Docker/Container and Kubernetes deployment Collaborate with the performance analysts, Flight Software team, and customer Skills and Experience Broad technical skills such as rigid body dynamics, control theory, and/or computer programming Proven experience using MATLAB and/or Simulink for simulation and analysis of feedback control systems, closed loop guidance, or navigation algorithms C/C++ programming experience Strong math skills in linear algebra, matrix math, statistics, trigonometry, and coordinate transformation Ability to clearly document analysis results in presentation slides and engineering memos Ability to work in a fast-paced, collaborative team environment Desired Skills Experience with simulations and physics-based modeling Experience with state estimation and navigation algorithms, including Extended Kalman Filters Experience with kinematics using Euler Angles and Quaternions Experience with autopilot design and linear stability analysis Familiarity or experience with missile defense systems or fire control Experience with C++ development and Gitlab Experience with FORTRAN and 6DOF simulations Experience with model-based software development using Simulink (autocoding) Excellent written and verbal communication skills Strong interpersonal skills Demonstrated ability as a team player to build consensus among peers and build effective relationships with team members Demonstrated communication skills with the ability to articulate complex technical issues to peers, management, subcontractors, and customers Familiarity with agile software development Distributed/parallel processing Possess a Secret clearance Security Clearance / Work Authorization This position requires the employee to be a U.S. Citizen and obtain Final Secret clearance, with Interim Secret clearance prior to start. Selected candidates will be required to maintain a minimum level, government‑issued Secret clearance for long‑term employment on the program. Qualifications Successful applicants generally have at least 3+ years of related experience and may have a post‑secondary degree or training in a related discipline, such as Aerospace Engineering or a related field. Location Onsite Full‑time: The work will be performed onsite at a designated Lockheed Martin facility. #J-18808-Ljbffr Lockheed Martin