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Salary
≈ $100k – $180k per year (Estimated)
Location
In office (Orlando)
Seniority
Senior · 10+ years exp
Visa
H-1B filings in 12 months: 5

Confirmed on the employer's own hiring board on Oct 27, 2026. First seen by Alion on Oct 5, 2026. L3Harris Technologies scores A on the Alion truth index.

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L3Harris Technologies is an American defense contractor formed in 2019 by the merger of L3 Technologies and Harris Corporation. It builds tactical radios and military communication systems, electronic warfare and intelligence, surveillance and reconnaissance equipment, space sensors and satellites, night vision devices, and uncrewed surface vessels, and owns the rocket engine maker Aerojet Rocketdyne. Its main customers are the United States Department of Defense and allied governments. The company is headquartered in Melbourne, Florida, United States.

Job Title: Senior Specialist, Systems / Guidance Navigation and Control Engineer

Job Code: 45556

Job Location: Orlando, Florida

Job Schedule: 9/80 work 9 out of every 14 days - totaling 80 hours worked - and have every other Friday off

Job Description:

L3Harris Technologies is seeking a Senior Guidance Navigation and Control (GNC) Engineer at our Orlando, FL location. The GNC Engineer will use general knowledge of vehicle dynamics, aerodynamics, propulsion, classical/modern flight controls, tactical/strategic missile guidance, and estimation theory to conduct moderate to difficult aerospace engineering tasks and apply defined engineering principles, industry standards, and company processes to support Tactical and Strategic Missile program objectives and requirements.

Essential Functions:

  • Perform Guidance, Navigation, and Control (GNC) design and analyses for tactical and strategic missile systems
  • Conduct trajectory shaping and tuning of tactical and strategic missile guidance and autopilot parameters to meet stringent customer requirements
  • Generate, modify, and utilize models and simulations of aerospace vehicles using first principles
  • Implement algorithms and modify simulations in C/C++ coding environment following strict Software Configuration Management (SCM) processes
  • Generate, modify, and utilize high-fidelity models and simulations of components and subsystems utilizing MATLAB/Simulink for tuning and requirements verification
  • Analyze real-time and post-test telemetry data in support of System level verification and mission activities
  • Ability to obtain a US Security Clearance

Qualifications:

  • Bachelor’s Degree and minimum 6 years of prior relevant Guidance Navigation and Control Engineering experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.

Preferred Additional Skills:

  • M.S. in Aerospace or Electrical Engineering, or similar degree
  • Analysis and design experience in control systems for aerospace vehicles
  • Prior experience with 6DOF simulations of aerospace vehicles using first principles
  • Missile or Launch Vehicle navigation and guidance experience/coursework
  • Experience with programming in C, C++ and using MATLAB/Simulink
  • Ability to work under Windows and Linux environments
  • Working with Systems Engineering disciplines and related activities (e.g., requirements traceability & verification)
  • Managing complex projects
  • Exceptional written and oral communication skills to include report writing, requirements and documentation, as well as design review presentations
  • Experience in design and analysis of multi-loop linear and non-linear flight control systems
  • Capability to linearize complex non-linear systems
  • Experience in aerodynamic design and analysis of aerospace vehicles, including the application of Computational Fluid Dynamics
  • Prior GNC experience in ballistic missiles
  • Experience with programming in Fortran
  • Experience with programming in Python
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