Guidance, Navigation, & Control (GNC) Engineer II Verified today

CesiumAstro · Westminster, CO · Space Systems · first seen 2026-09-03

CesiumAstro develops communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We are seeking a GNC Engineer II to join our spacecraft team in Westminster, Colorado.

What You Will Do

You will design and analyze Guidance, Navigation, and Control systems for CesiumAstro satellites and payloads through all stages of design, integration, test, and operations. You will perform trade studies, participate in design reviews, create models, run simulations, and complete system testing. You will build, test, and fly hardware on a small team developing satellites for orbit.

As part of a startup, you will contribute to company-critical projects outside your area of expertise alongside your core GNC responsibilities.

Key Requirements

  • Master of Science or Doctorate in Aerospace Engineering from an accredited institution
  • 2+ years of internship, research, or industry experience in satellite attitude and orbit systems
  • Expertise in attitude estimation, guidance, and control; coordinate frame transformations; linear algebra; and non-linear systems
  • Experience with multiple spaceflight missions from concept to operations
  • Experience in low earth orbit satellites
  • Experience with post-CDR test failures and on-orbit failures that inform design and test philosophy
  • Experience with successful and unsuccessful recovery from on-orbit failures
  • Experience in conceptualization, architecture design, requirements specification, design, test, and operations of various GNC architectures and components
  • Familiarity with space mission simulation tools such as STK, Basilisk, GMAT, or FreeFlyer
  • Experience defining spacecraft trajectories and orbital requirements
  • Fluency with Python and C++ or other modeling languages
  • Familiarity with spacecraft mission design including events, pointing modes, maneuver planning, and operations
  • Excellent written and verbal communication skills

Preferred Experience

  • CubeSat and SmallSat experience
  • Hands-on experience with spacecraft instrumentation, subsystems, and test labs
  • Experience with multiple mission simulation and flight architectures
  • Experience in LEO, MEO, GEO, and deep space satellites
  • Experience with communications satellites

Employment Details

Full-time position. CesiumAstro offers company stock options and benefits including health, dental, vision, HSA, FSA, life, disability, and retirement plans.