Guidance, Navigation & Control Engineer III - Secret clearance

About Lockheed Martin Space Space is a critical domain, connecting our technologies, our security, and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire, and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. About the Role Come join the growing Theater Strike Weapon System program portfolio, including Conventional Prompt Strike, Hypersonic Weapon Systems, Sea-Launched Cruise Missile, Hypersonic Payload Delivery systems, and other new and dynamic programs. In this role as a GNC engineer, you may be involved in many of the following activities: Apply missile guidance, navigation, and control expertise to algorithm development, signal and data processing, modeling, and simulation Integrate Matlab/Simulink models into a 6-DOF C++ simulation Develop high fidelity models and simulation software Develop new source code in C++ and Python Modify code in C++, C, Matlab, Simulink, Fortran, Python, Linux shell, and YAML Create unit tests Implement 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 critical thinkers, Flight Software team, and customer Successful applicants generally have a minimum of 2+ years of related experience and may have a post‑secondary degree or training in a related discipline. Basic Qualifications 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. Demonstrate strong math skills in the areas of linear algebra, matrix math, statistics, trigonometry, and/or coordinate transformation. Ability to clearly document analysis results in presentation slides and engineering memos. Ability to work in a fast-paced, collaborative team environment. Security Clearance / Work Authorization To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen. Applicants must be able to obtain Final Secret clearance to be considered qualified. Final Secret clearance is required prior to start. Selected candidates will be required to maintain a minimum level of government issued Secret clearance for long term employment on this program. 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) Experience with hardware and hardware subsystems for guidance navigation control 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 Security Clearance Statement This position requires a government security clearance, you must be a US Citizen for consideration. Clearance Level: Secret. Schedule for this Position 9x80 every other Friday off. Pay Rate The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas) is $101,000 - $178,135. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Benefits Offered Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Education Assistance, Parental Leave, Paid time off, and Holidays. Equal Opportunity Employer Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics. Application Details Experience Level: Experienced Professional Business Unit: SPACE Relocation Available: Possible Career Area: Guidance, Navigation and Control Type: Full-Time Shift: First #J-18808-Ljbffr Lockheed Martin