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# GNC Engineering Sr - E3 - Performance and HWIL

- **Company:** Lockheed Martin
- **Location:** Grand Prairie, TX, United States
- **Experience:** Expert
- **Salary:** $98,100.0 - $182,100.0
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Linux, Fortran (Programming Language), Python (Programming Language), Kinematics, MATLAB, Real Time Simulation, Software Engineering, Software Requirements Analysis, Systems Integration, Hardware Testing, Git, SC Clearance, Information Technology
- **Published:** September 1, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9131490/gnc-engineering-sr-e3-performance-and-hwil

## About the Role

* BS in electrical engineering, mechanical engineering, aerospace engineering, physics, computer science, applied mathematics, or similar STEM degree
 * 3+ years of professional experience in a relevant field
 * Foundational mathematics capabilities that include linear algebra, dynamics, coordinate frame transformations, and state estimation techniques
 * Experience with different simulation and test environments (6-DOF IFS, HWIL, flight test experience, etc.)
 * Proficiency in SW development environments like Git using programming languages such as MATLAB, Python, C++, FORTRAN, or Ada
 * Excellent written and verbal communication skills and ability to work in a collaborative environment
 * US Citizenship and an ability to attain Secret Clearance is required

Desired Skills

 * Experience with real time simulations and hardware in the loop testing
 * Experience with total system performance analysis and verification of total system requirements
 * Experience with rigorous root cause analysis and failure investigations
 * MS in electrical engineering, mechanical engineering, aerospace engineering, physics, computer science, applied mathematics, or similar STEM degree and 1+ years of relevant experience
 * Experience using a Linux-based operating system
 * Familiarity with some, or all, of the following: linear algebra, probability and statistics, state dynamic equations, Kalman filter applications, kinematics and rotating coordinate systems
 * Experience integrating and testing hardware and software in Hardware In-the-Loop (HWIL)
 * Prior experience supporting flight tests

## Description

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.


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