Guidance, Navigation & Control Engineer, Sr. (M&S) - Secret Clearance
Littleton, Colorado
Littleton, Colorado
Responsibilities
Job ID: 711109BR Date posted: Nov. 20, 2025
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 GNC/M&S Developer who will be tasked with GN&C analysis and modeling and simulation development efforts associated with advance missile weapon design across the Theater Strike Weapon Systems (TSWS) and Strategic Missile Defense (SMD) portfolios, including Conventional Prompt Strike (CPS) and possibly other programs.
In this role, you will:
• Develop, document, maintain, and verify high-fidelity weapon system simulation models
• Perform analysis and trade studies of existing and proposed system designs or concepts
• Assess performance and requirement compliance associated with advanced weapons systems, subsystems, or algorithms
• Verify and Validate models and systems against analytical referents, hardware qualification data, flight test data, or other artifacts
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 Aerospace Engineering or related engineering discipline.
Basic Qualifications:
Skill Requirements:
• B.S. or M.S. in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, or related field.
• Advanced proficiency with simulation and programming tools such as Matlab/Simulink, C++, Python, and/or Fortran
• Weapon system Modeling & Simulation design and analysis experience
Security Clearance / Work Authorization:
• To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen.
• Final Secret clearance is required to start employment. Applicants must possess a currently active Secret security clearance to be considered qualified.
• Selected candidates will be required to maintain at minimum a 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
• 4–6 years of GNC experience on various weapon system applications (e.g., missiles, hypersonic vehicle).
• Experience with navigation and/or control system design, modeling, and verification
• Experience deploying algorithms or simulation models that satisfy real-time performance requirements
• Experience with DevOps/DevSecOps CI/CD pipelines and software version control such as Git
• Ability to develop and/or verify/validate complex vehicle models and simulations such as missile 6-degree-of-freedom simulations
• Active Top Secret Clearance or ability to obtain and maintain in support of new programs or higher caveat program scope within TSWS portfolio
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Secret
Other Important Information You Should Know
Expression of Interest: 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 Schedules: 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.
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), 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.
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.
Experience Level: Experienced Professional
Business Unit: SPACE
Relocation Available: Possible
Career Area: Guidance, Navigation and Control
Type: Full-Time
Shift: First
Apply Now
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 GNC/M&S Developer who will be tasked with GN&C analysis and modeling and simulation development efforts associated with advance missile weapon design across the Theater Strike Weapon Systems (TSWS) and Strategic Missile Defense (SMD) portfolios, including Conventional Prompt Strike (CPS) and possibly other programs.
In this role, you will:
• Develop, document, maintain, and verify high-fidelity weapon system simulation models
• Perform analysis and trade studies of existing and proposed system designs or concepts
• Assess performance and requirement compliance associated with advanced weapons systems, subsystems, or algorithms
• Verify and Validate models and systems against analytical referents, hardware qualification data, flight test data, or other artifacts
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 Aerospace Engineering or related engineering discipline.
Basic Qualifications:
Skill Requirements:
• B.S. or M.S. in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, or related field.
• Advanced proficiency with simulation and programming tools such as Matlab/Simulink, C++, Python, and/or Fortran
• Weapon system Modeling & Simulation design and analysis experience
Security Clearance / Work Authorization:
• To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen.
• Final Secret clearance is required to start employment. Applicants must possess a currently active Secret security clearance to be considered qualified.
• Selected candidates will be required to maintain at minimum a 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
• 4–6 years of GNC experience on various weapon system applications (e.g., missiles, hypersonic vehicle).
• Experience with navigation and/or control system design, modeling, and verification
• Experience deploying algorithms or simulation models that satisfy real-time performance requirements
• Experience with DevOps/DevSecOps CI/CD pipelines and software version control such as Git
• Ability to develop and/or verify/validate complex vehicle models and simulations such as missile 6-degree-of-freedom simulations
• Active Top Secret Clearance or ability to obtain and maintain in support of new programs or higher caveat program scope within TSWS portfolio
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Secret
Other Important Information You Should Know
Expression of Interest: 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 Schedules: 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.
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), 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.
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.
Experience Level: Experienced Professional
Business Unit: SPACE
Relocation Available: Possible
Career Area: Guidance, Navigation and Control
Type: Full-Time
Shift: First
About
At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges.
Pioneering Defense Technology: From aerospace to outer space to cyber space, you can innovate mission solutions alongside the best minds in the business.
United By Culture: Excellence, integrity, and collaboration define us. We accelerate change and embrace one another’s perspectives to win for our customers.
Real Impact, Real Growth: Grow your career and skills for life. Our wide array of opportunities and technology-driven learning programs enable your development and agility.
Your Health, Your Wealth, Your Life: Competitive pay, comprehensive benefits and flexible schedules designed so you thrive — at work and beyond.
Empowered to Be Your Best: Use your strengths to make a difference in the lives of one another, our customers, our communities, and our planet.
Here, the possibilities are endless because we offer:
- Flexible Schedules, dependent on role
- Levels: Student, Entry, Mid, Senior, Management
- Locations: Nationwide & OCONUS Positions
Qualifications
What does a successful GNC employee at Lockheed Martin look like?
Check out the info below to see if you have what it takes.
- Collaborative
- Imaginative
- Problem-solver
- Results-driven
- Team player
- Technologically savvy
Quote
The work so far has been challenging and varied. Overall, it’s been a great job; The people, environment, and benefits are fantastic on top of the work itself.
Tim J.
Benefits
-
Healthcare
Medical, Dental and Vision coverage is available for employees who opt-in.
-
401k/Retirement Plans
Our 401(k) plan features generous matching and company contributions.
-
Professional Development
We support our employees through mentoring, internal & external educational programs, networking, skills enhancement and career-building programs.
-
Maternity and Paternity Leave
Our generous parental leave policies support your journey into parenthood. When you return to work, our facilities offer mother's rooms to support your transition and work/life balance.
-
Paid Time Off
We offer PTO, paid holidays and paid time off for jury duty and military obligations.
-
Flex-time
Depending on position, we offer a flexible work schedule.