GN&C Systems Integration Engineer

Description: 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.

A Level 5 GN&C Integration Engineer drives the end-to-end development, integration, and verification of complex aerospace or defense systems. This senior staff role requires translating high-level requirements into actionable control algorithms, validating software-in-the-loop (SWIL)/hardware-in-the-loop (HWIL) environments, and overseeing system performance across all mission phases.

The Guidance, Navigation, and Control (GN&C) Integration Engineer (Level 5) will lead the design, analysis, and integration of cutting-edge flight control and estimation architectures. Operating as a senior technical authority, you will bridge the gap between system simulation, algorithmic design, flight software implementation, and hardware testing, ensuring seamless vehicle performance from concept to deployment.

Key Responsibilities

• Algorithm & Control Design: Tune advanced control laws, state estimators (e.g., Kalman filters), and guidance logic for complex trajectories and mission profiles.
• System Integration: Integrate GN&C algorithms into 6-DOF dynamic simulations and collaborate closely with systems, avionics, and software teams to ensure hardware compatibility.
• Testing & Validation: Oversee verification and validation (V&V) protocols, including hardware-in-the-loop (HWIL) testing, simulation dispersion analysis, and post-flight data analysis.
• Requirement Definition: Translate mission constraints and customer needs into specific GN&C hardware/software flow-down requirements.
• Technical Leadership: Guide junior engineers, present technical findings at design reviews (PDR/CDR), and drive root-cause analysis during anomaly resolution.
Basic Qualifications:
• Technical Proficiencies: Strong foundation in classical/modern control theory, flight mechanics, and trajectory optimization.
• Tooling Expertise: Proficiency in developing and maintaining analysis tools in MATLAB/Simulink and C++ or Python.
• Clearance/Citizenship: Must be a U.S. Person (U.S. Citizen or Permanent Resident) with active Final Secret and ability to obtain and maintain a U.S. Government DoD Top Secret clearance.
Desired Skills:
• Bachelor’s degree in Aerospace, Mechanical, Electrical Engineering, or Physics with 12+ years of experience (Master’s degree with 10+ years of experience, Ph.D. with 8+ years of experience).
• Experience with Fleet Ballistic Missile
• Experience with specialized GN&C phases (e.g., Rendezvous and Proximity Operations (RPO), hypersonic re-entry, or multi-vehicle system integration).
• Familiarity with Model-Based Systems Engineering (MBSE) tools.
• Active, in-scope DoD Top-Secret clearance or Special Access Program (SAP) access.
Security Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.
Clearance Level: Top 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 $128,400 - $226,435. 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: Systems Engineering: Other
Type: Full-Time
Shift: First