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

Company: Lockheed Martin
Location: Sunnyvale
Posted on: April 1, 2026

Job Description:

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. Join us in shaping a new era in space and find a career that's built for you About the Role : We are seeking an experienced Guidance, Navigation, and Control (GNC) Engineer Senior (Level III). This is a position within the Conventional Prompt Strike (CPS) hypersonic weapon system program that directly supports critical weapons fielding support for the nation. In this role you will be tasked with GN&C analysis, modelling and simulation work, and NGC Test Bed Hardware testing for CPS test flight and deployment campaigns. What You Will Be Doing : • Develop the high-fidelity flight simulation software used to verify mission capabilities • Provide software integration and verification support for CPS flight test campaign • Provide weapon system testing support and test hardware configuration development • Execute performance analysis for the weapon system • Leverage proficiency in C++ and MATLAB to implement, test, and validate system models and simulations • Perform design and analysis of guidance, navigation, and control algorithms as it pertains to flight and hardware testing • Communicating technical findings clearly and working effectively in a collaborative, cross-functional environment Successful applicants generally have at least 4 years of related experience and may have a post-secondary degree or training in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, or related field. Skill Requirements : • Experience with control system design, simulation, or analysis for Aerospace engineering applications • Experience with simulation and programming tools such as MATLAB/Simulink, C++, Fortran, and/or Python • Experience with hardware test environments, Hardware-in-the-Loop, testbeds, or hybrid simulation/hardware integrated environments Security Clearance / Work Authorization: : • To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen. • Qualified applicants must possess at minimum a currently Active Secret security clearance to be considered. • Selected candidates will be required to maintain a minimum level, government issued Secret clearance for long term employment on this program. Desired skills • Experience with flight control design and applicable subsystems • Professionally demonstrated experience to develop or analyze algorithms such as guidance, navigation, autopilot, inertial tracking, and servo control algorithms • Experience troubleshooting hybrid simulation/hardware integrated environments • Experience with C++ and Fortran programming languages • Experience with Simulink and autocode algorithm integration • Ability to perform preflight system performance assessment and post flight verification analyses • Experience with DevOps/DevSecOps CI/CD pipelines and software version control such as Git • Experience operating in Linux environments including High Performance Computing usage • Experience with Agile development • An active U.S. DOD Secret clearance with an investigation date in the last 5 years and able to obtain and hold a DOD Top Secret Lockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics. The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration. * At Lockheed Martin, we use our passion for purposeful innovation to help keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide diverse career opportunities designed to propel, develop, and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility. If this sounds like a culture you connect with, you’re invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs , and apply for roles that align with your qualifications. Other Important Information By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings. Ability to work remotely Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility. Work Schedule Information Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits. Security Clearance Information This position requires a government security clearance, you must be a US Citizen for consideration. Pay Rate: The annual base salary range for this position in California, Massachusetts, and New York (excluding most major metropolitan areas), Colorado, Hawaii, Illinois, Maryland, Minnesota, New Jersey, Vermont, Washington or Washington DC is $101,000 - $178,135. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. 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. (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year. This position is incentive plan eligible. Pay Rate: The annual base salary range for this position in most major metropolitan areas in California, Massachusetts, and New York is $116,200 - $201,365. For states not referenced above, the salary range for this position will reflect the candidate’s final work location. Please note that the salary information is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market and business considerations when extending an offer. 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. This position is incentive plan eligible.

Keywords: Lockheed Martin, Vallejo , Guidance, Navigation, & Control Engineer (Senior, Level III) - Secret, Engineering , Sunnyvale, California