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

Reference: 733231BRPosted: 2026-06-25Location: Highlands Ranch, ColoradoSalary: $101,000 - $178,135Clearance: TS/SCI w/PolyCompany: Lockheed MartinDescription:About Lockheed Martin SpaceSpace 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 TeamThe Military Space Guidance, Navigation, and Control (GN&C) team is made up of enthusiastic and talented individuals that design and produce the hardware, algorithms, and software required to solve the challenging problems of controlling these systems in a harsh, zero-g environment. Due to the classified nature of this opportunity, we can’t talk about everything you’ll do on this program but know that you will play a part in building end-to-end solutions and game-changing technology. What You’ll Do• Design, analyze, and simulate spacecraft control systems, including attitude determination and Kalman filtering.• Develop and validate GN&C algorithms using MATLAB/Simulink, C++, and Python.• Perform hardware in the loop and flight software testing to verify control performance.• Contribute to flight software development and auto code generation to C++.• Conduct jitter and performance analyses for high precision missions.• Collaborate with cross functional engineers, mission operators, and customers to integrate GN&C hardware suites.• Communicate technical concepts clearly to peers, management, subcontractors, and customers.How You’ll Deliver• Build and maintain simulation models that reflect real world spacecraft dynamics.• Implement and tune Kalman filters and attitude determination algorithms.• Execute test plans, capture data, and produce verification reports.• Generate and review technical documentation, including requirement specifications and design reviews.• Support rapid iteration cycles in a fast paced, collaborative environment.• Provide technical briefings and status updates to stakeholders throughout the program lifecycle.Successful applicants will generally have 3+ years of related experience and may have a post-secondary degree or training in a related discipline.Basic Qualifications:Skill Requirements• Strong Experience in Spacecraft Controls Design, Analysis, Simulation and Test• Experience with simulation and programming tools (ex. MATLAB/Simulink, C++, Python) and Kalman Filtering / Attitude Determination• Experience in performing GN&C design and analysis tasks Security Clearance / Work Authorization• To meet requirements of the program/customer, this position requires the selected employee to be a U.S. Citizen.• Although not required to start, for long term employment on this program, the selected applicant must: 1) Be eligible to obtain, and maintain, Top Secret with adjudicated SCI Eligibility (i.e. TS/SCI) 2) Be willing to consent to customer required Polygraph examination and receiving favorable results.Desired Skills:• 5+ years of related professional experience• Bachelor’s or Master’s Degree in Aerospace Engineering or related discipline focusing on control system design & analysis• Possess 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• Demonstrated good communication skills with the ability to articulate complex technical issues to peers, management, subcontractors and customers.Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.Clearance Level: TS/SCI w/PolyOther Important Information You Should KnowExpression 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 offPay 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 ProfessionalBusiness Unit: SPACERelocation Available: PossibleCareer Area: Guidance, Navigation and ControlType: Full-TimeShift: First