GNC Engineer, Principal

in Plano, TX

GNC Engineer, Principal Job

Job Description Job Attributes+

  • Job ID


  • Req #


  • Organization

    UMS-Product Line-21002427

  • Job Category


  • Job Location

    Plano, TX, US

  • Job Type


  • Clearance Level


  • Career Level


  • Schedule


  • Shift

    Day - 1st

  • Travel

    Yes, 10 % of the Time

  • Remote



Principal GNC Engineer
We are a company of innovators, game changers, and entrepreneurs. As a prime contractor, we provide a broad range of communication, electronic and sensor systems used on military and commercial platforms across the globe. We embrace innovative and progressive ideas to advance our products for military and commercial customers. Electronic Systems Segment (ESS) is one of four L3 business segments, and provides a broad range of aerospace systems, security and detection systems, and pilot training. 
L3 AS&T is built on the proposition that a small team of the right people can do what others will not even attempt. We specialize in developing disruptive, next-generation technologies for advanced small  Unmanned Air Systems UAS/UAVs, affordable radar systems, weapon systems, and RF sensor technologies using small company agility and big company experience. We’ve earned a reputation for providing vital warfighter solutions at a faster pace than traditional DoD contractors, so if you like the idea of hands-on experience designing, building, testing and fielding new technology, join us.
Principal GNC engineer using first-principles thinking, use a foundational understanding of physics combined with multi-disciplinary experience to develop and evaluate system capability to help steer a program’s path forward.  GNC Engineers are responsible for simulation and software development, implementation, testing, and analysis to support a variety of vehicle types and configurations.  provides advanced concept development, design, implementation, test, and evaluation of AS&T.
You will demonstrate success by:
  • Develop GNC Design Architecture and Technical Roadmap supporting Programs
  • Lead simulation/software development and manage task delegation to team members

  • Develop dynamic vehicle aerodynamic, propulsion, and hardware/sensor models
  • Develop guidance algorithms to provide mission capability
  • Design and tune controllers for vehicle stability and control
  • Integrate a suite of sensor feedback for Navigation and Guidance algorithms development
  • Lead root-cause failure identification and resolution studies
  • Analyze system performance, capabilities, sensitivities, and issues using a variety of methods
  • Create and Present design/results to internal and external customers
  • Support Growth of GNC Functional Organization through mentoring and creation of process/technical resources
  • Strategy and proposal support including technical scope, cost, schedule
  • Other duties as assigned

Our Values are an integral part of who we are. We seek candidates who share our values:

  • Integrity
  • Excellence
  • Accountability
  • Respect

About L3Harris Technologies

L3Harris Technologies is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers’ mission-critical needs. The company provides advanced defense and commercial technologies across air, land, sea, space and cyber domains. L3Harris has approximately $17 billion in annual revenue, 50,000 employees and customers in more than 130 countries.


Job Qualifications


  • Must be a U.S Citizen with ability to obtain and maintain secret DoD clearance .Must be able  to obtain and maintain additionally clearances
  • Bachelor’s degree in Engineering or Mathematics (Advanced degree preferred)
  •  Demonstrated Technical Expertise in a variety of GNC disciplines
  • Guidance, Target State Estimation, Navigation, Control Theory, Vehicle Modeling
  • Demonstrated Behavioral Competencies
  • Positive Attitude, Mentoring, Emotional Intelligence, Teaming, Delegation, Work Ethic
  • Demonstrated Communication Skills
  • Written, verbal, and presentation for internal and external customers
  • Ability to translate technical vision, direction, tasking, and status to multi-disciplinary team
  • Demonstrated Technical Skills
  • Excellent problem solving and math skills
  • Proficiency with MATLAB/Simulink, C/C , and Microsoft Office products
  • Excellent communication skills (written, verbal, & presentation) 
  • Physical requirements include the ability to travel up to 25% and the ability to lift up to 20 lbs.

 Desired Skills:

  • Familiarity with a variety of mission sensors (radar, optical, etc) types, modes, and stabilization
  • Familiarity with a variety of vehicle sensors (GPS, Antenna, IMU, ADS, etc) types and modes
  • Familiarity with a variety of tracker types
  • Background in physics/rigid body dynamics

Additional Information

Who We Are

L3 is proud to employ more than 7,700 veterans of the U.S. military, helping them use their unique training and skills to meet our customers' needs.

Many of L3's top business leaders are former military personnel who provide critical insight and support for using L3's advanced technology and services to protect our country's freedoms.

Be part of our mission. be L3!

Learn more at

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