Lockheed Martin
Guidance, Navigation, & Control Engineer (Senior, Level III) – Secret
Lockheed Martin, Huntsville, Alabama, United States, 35824
Job Basics
LMCareers Business Unit SPAC ES Security Clearance Secret Shift
FirstDirect/IndirectDirect Business Area Space Department
73D2A00:GNC-Missile Job Class
Guidance, Navigation and Control Job Category Experienced Professional Req Type Full-Time 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 Team Defending against modern missile threats on the Next Generation Interceptor (NGI) program requires constant collaboration and innovation. We integrate systems end to end to detect, control, and engage threats across every domain, investing in technologies like directed energy, space-based capabilities, and solid-state radar to create layers of defense. Shooting a missile down with a missile was once science fiction. We’ve made it a reality. Spotting enemy launches, identifying targets, calculating trajectories, launching interceptors, and guiding them to destroy threats—all within seconds—is complex work. Our culture supports bold ideas, technical excellence, and building a safer future.
About the Role As a GNC Sr Engineer, you will join the Simulation and Performance team on the Next Generation Interceptor (NGI) program.
Responsibilities
Design, analyze, and optimize GN&C subsystem dynamics and control systems using MATLAB/Simulink, C, and Python.
Develop, verify, and integrate high-fidelity simulation models into 6-DOF C simulations, Matlab/Simulink environments, and Linux-based HPC or VM systems.
Modify and build code in C, C, Python, Fortran, Matlab/Simulink, Linux shell, and YAML, and create unit tests to ensure model and software quality.
Support system integration, test, and verification activities to confirm subsystem performance meets program requirements.
Work in an Agile DevOps environment leveraging Docker, containerization, and Kubernetes deployments.
Collaborate with performance analysts, flight software teams, and customers throughout the program life cycle, including mission operations and post-launch performance assessments.
Basic 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 other related field.
Skill Requirements
Professional experience in Modeling and Simulation with emphasis in Guidance, Navigation, and Control algorithms
Experience with Matlab/Simulink and model development
Experience in Python and C
Experience in one or more of the following: 1) Tactical flight software development, 2) Missile algorithm development, and/or 3) System performance analysis
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 working in the development phase of a missile defense program on modeling and simulation or software
Experience with GitLab, gcovr, gtest, Digital.ai Agility (VersionOne), Clang, Jira, or other Agile and DevOps tools
Experience implementing real-time simulation in a hardware-in-the-loop laboratory
Highly proficient with the following programming languages: Matlab, C, C, Fortran 77, Python, Linux, YAML
Experience implementing real-time simulation in a hardware-in-the-loop laboratory
Experience with some of the following: image and sensor processing algorithms, target tracking algorithms, physics-based modeling or electro-optical sensors
HWIL and hardware/software integration experience
Experience with model based software development using Simulink (autocoding) and Gitlab
Excellent written and verbal communication skills
Strong interpersonal skills
Ability to work in a fast‑paced, collaborative team environment.
Demonstrated ability as a team player to build consensus among peers and build effective relationships with team members.
Other Important Information VirtualnoZip35805EEOLockheed 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 , and apply for roles that align with your qualifications.
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.
Work Schedule 9×80 every other Friday off. Select the Telework classification for this position. Employee will work on‑site full-time.
Lockheed Martin
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FirstDirect/IndirectDirect Business Area Space Department
73D2A00:GNC-Missile Job Class
Guidance, Navigation and Control Job Category Experienced Professional Req Type Full-Time 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 Team Defending against modern missile threats on the Next Generation Interceptor (NGI) program requires constant collaboration and innovation. We integrate systems end to end to detect, control, and engage threats across every domain, investing in technologies like directed energy, space-based capabilities, and solid-state radar to create layers of defense. Shooting a missile down with a missile was once science fiction. We’ve made it a reality. Spotting enemy launches, identifying targets, calculating trajectories, launching interceptors, and guiding them to destroy threats—all within seconds—is complex work. Our culture supports bold ideas, technical excellence, and building a safer future.
About the Role As a GNC Sr Engineer, you will join the Simulation and Performance team on the Next Generation Interceptor (NGI) program.
Responsibilities
Design, analyze, and optimize GN&C subsystem dynamics and control systems using MATLAB/Simulink, C, and Python.
Develop, verify, and integrate high-fidelity simulation models into 6-DOF C simulations, Matlab/Simulink environments, and Linux-based HPC or VM systems.
Modify and build code in C, C, Python, Fortran, Matlab/Simulink, Linux shell, and YAML, and create unit tests to ensure model and software quality.
Support system integration, test, and verification activities to confirm subsystem performance meets program requirements.
Work in an Agile DevOps environment leveraging Docker, containerization, and Kubernetes deployments.
Collaborate with performance analysts, flight software teams, and customers throughout the program life cycle, including mission operations and post-launch performance assessments.
Basic 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 other related field.
Skill Requirements
Professional experience in Modeling and Simulation with emphasis in Guidance, Navigation, and Control algorithms
Experience with Matlab/Simulink and model development
Experience in Python and C
Experience in one or more of the following: 1) Tactical flight software development, 2) Missile algorithm development, and/or 3) System performance analysis
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 working in the development phase of a missile defense program on modeling and simulation or software
Experience with GitLab, gcovr, gtest, Digital.ai Agility (VersionOne), Clang, Jira, or other Agile and DevOps tools
Experience implementing real-time simulation in a hardware-in-the-loop laboratory
Highly proficient with the following programming languages: Matlab, C, C, Fortran 77, Python, Linux, YAML
Experience implementing real-time simulation in a hardware-in-the-loop laboratory
Experience with some of the following: image and sensor processing algorithms, target tracking algorithms, physics-based modeling or electro-optical sensors
HWIL and hardware/software integration experience
Experience with model based software development using Simulink (autocoding) and Gitlab
Excellent written and verbal communication skills
Strong interpersonal skills
Ability to work in a fast‑paced, collaborative team environment.
Demonstrated ability as a team player to build consensus among peers and build effective relationships with team members.
Other Important Information VirtualnoZip35805EEOLockheed 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 , and apply for roles that align with your qualifications.
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.
Work Schedule 9×80 every other Friday off. Select the Telework classification for this position. Employee will work on‑site full-time.
Lockheed Martin
#J-18808-Ljbffr