> Markdown version of [/jobs/ext/3012033-guidance-navigation-control-engineer-iii-senior-top-secret](https://www.wearedevelopers.com/jobs/ext/3012033-guidance-navigation-control-engineer-iii-senior-top-secret). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Guidance, Navigation & Control Engineer III (Senior) - Top Secret - **Company:** Lockheed Martin - **Location:** Littleton, CO, United States - **Experience:** Expert - **Salary:** $110,300.0 - $204,900.0 - **Contract:** Permanent contract - **Skills:** C++ (Programming Language), Programming Tools, Hardware Design, Python (Programming Language), MATLAB, Control Structures - **Published:** September 20, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3397728627&tx=KR2121FFG&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54 ## About the Role Applicants will generally possess a minimum of 3+ years of related experience and may have a post-secondary degree or training in a related discipline. Successful completion of customer required Polygraph Examination with favorable results is required for long term employment on this program, * Strong experience in spacecraft controls design, analysis, simulation, and test. * Experience with simulation and programming tools such as MATLAB/Simulink, C++, Python. * Experience with Kalman Filtering and Attitude Determination. Security Clearance / Work Authorization: * To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen. * Active Top Secret security clearance is required prior to start, and necessary for consideration * Top Secret security clearance with adjudicated SCI (i.e. TS/SCI) is required for long term employment on this program. * Selected candidates must be willing to consent to Polygraph Examination, receiving favorable results, as required by our end customer. Desired Skills * Active TS/SCI clearance with CI Poly. * Experience with flight software development and autocode to C++. * Jitter analysis experience (highly desired). * Familiarity with a GN&C hardware suite for space applications. * Mission operations experience. * Ability to work in a fast-paced, dynamic, collaborative team environment. * Strong communication skills with the ability to articulate complex technical issues to peers, management, subcontractors, and customers. ## Description In this role, you will contribute to the design, analysis, and testing of guidance, navigation, and control systems that enable spacecraft to operate in complex space environments. You'll collaborate closely with multidisciplinary teams to develop robust, flight-proven GN&C solutions and ensure mission success through rigorous simulation and validation. What You Will Be Doing * Perform spacecraft controls design, analysis, simulation, and testing activities. * Develop and validate GN&C algorithms and flight software. * Utilize simulation and programming tools (e.g., MATLAB/Simulink, C++, Python). * Apply Kalman Filtering and Attitude Determination techniques to mission design. * Support hardware integration and mission operations in a dynamic, team-oriented environment., Designs, develops, implements, verifies and tests algorithms to perform guidance, navigation and control of aircraft, spacecraft, launch vehicles and upper stages during powered and coast phases of flight, earth orbit, interplanetary cruise and orbital insertion, as well as during staging events. Navigation functions include the statistical processing of measured data points and their substitution into algorithms simulating physical reality. Guidance functions include the formulation of specific equations and control laws to achieve a desired position in space. Control design and analyses processes consist of the development of the control requirements for aircraft, launch vehicles and/or spacecraft. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [AI Pair Programming with GitHub Copilot at SAP: Looking Back, Looking Forward!](https://www.wearedevelopers.com/videos/1546-ai-pair-programming-with-github-copilot-at-sap-looking-back-looking-forward) - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [Quantum Computing - The tiny and the big challenges](https://www.wearedevelopers.com/videos/934-quantum-computing-the-tiny-and-the-big-challenges) - [Building a hypercar from scratch](https://www.wearedevelopers.com/videos/607-building-a-hypercar-from-scratch) - [Reality and Beyond: Coding a Drone Using {Unity 3D .NET} and ChatGPT AI!](https://www.wearedevelopers.com/videos/702-reality-and-beyond-coding-a-drone-using-unity-3d-net-and-chatgpt-ai) ## Related Articles - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology)