Senior GNC Engineer - Navigation & Estimation

Approach Venture LLC

$120K — $160K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Physics, Applied Mathematics, Computer Science, or related field.
  • 5+ years of professional experience in guidance, navigation, or state estimation systems.
  • Strong software development skills in modern C++ and Python.
  • Proven ability in designing and implementing Kalman Filters or similar estimation techniques.
  • Experience creating sensor fusion algorithms for autonomous systems.
  • Solid knowledge of orbital mechanics and dynamics related to spacecraft.
  • Experience with validation of algorithms through simulation or operational deployment.

Responsibilities

  • Lead development of spacecraft navigation and state estimation algorithms.
  • Design and implement Extended Kalman Filters and probabilistic estimation techniques.
  • Develop relative navigation algorithms for docking and formation flight.
  • Create sensor fusion architectures integrating multiple sensor data.
  • Define accuracy requirements for navigation systems and manage error budgets.
  • Analyze navigation performance through simulation and real flight data.
  • Collaborate across teams to integrate navigation with flight systems.

Benefits

  • Opportunity to work on next-generation spacecraft technology.
  • Significant ownership over flight-critical navigation software.
  • Collaborative environment with a focus on innovation and advanced technologies.
  • Participation in design reviews and technical evaluations.
  • Hands-on experience with cutting-edge aerospace projects.
Full Job Description
Senior GNC Engineer - Develop Autonomous Navigation & Sensor Fusion for Next-Generation Spacecraft

Denver, Colorado | On-site

Opportunity Summary

Join a venture-backed aerospace company developing advanced spacecraft platforms designed to enable the next generation of autonomous in-space operations. As the company progresses from prototype development toward flight-qualified systems, this role will lead the design and implementation of the navigation algorithms that allow spacecraft to accurately determine their position, orientation, and motion while operating in dynamic orbital environments. As a Senior GNC Engineer, you will own the development of flight-critical navigation and state estimation software supporting autonomous rendezvous, proximity operations, docking, and long-term orbital navigation. Working alongside controls, perception, avionics, embedded software, and systems engineering teams, you'll transform complex sensor data into reliable vehicle state information while helping define the navigation architecture for future spacecraft. This is a highly technical role with significant ownership, offering the opportunity to influence both flight software and overall vehicle performance from concept through on-orbit operations.

Job Duties
  • Lead the development of spacecraft navigation and state estimation algorithms for autonomous flight operations.
  • Design, implement, tune, and validate Extended Kalman Filters, Unscented Kalman Filters, and other probabilistic estimation techniques.
  • Develop relative navigation algorithms supporting rendezvous, docking, proximity operations, and formation flight.
  • Design onboard sensor fusion architectures integrating multiple navigation sensors into robust state estimates.
  • Develop measurement models and estimation techniques for optical, inertial, and ranging sensors.
  • Define navigation system accuracy requirements and allocate error budgets across sensing and estimation systems.
  • Develop orbit determination, orbital propagation, and absolute navigation algorithms supporting spacecraft operations.
  • Analyze navigation performance using simulation, hardware testing, and flight data.
  • Support hardware-in-the-loop and software-in-the-loop testing campaigns.
  • Develop analysis tools, visualization utilities, and validation software using C++ and Python.
  • Investigate navigation anomalies and improve estimator robustness throughout system development and flight operations.
  • Collaborate closely with controls, perception, avionics, embedded software, and systems engineering teams to integrate navigation capabilities into the overall flight system.
  • Participate in design reviews, technical trade studies, and system architecture decisions.


Qualifications
  • Bachelor's degree in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Physics, Applied Mathematics, Computer Science, or a related technical discipline.
  • 5+ years of professional experience developing guidance, navigation, or state estimation systems.
  • Strong software development experience using modern C++ and Python.
  • Experience designing and implementing Kalman Filters or similar sequential estimation techniques.
  • Experience developing sensor fusion algorithms for autonomous systems.
  • Strong understanding of orbital mechanics, rigid-body dynamics, coordinate transformations, and feedback control systems.
  • Experience developing algorithms that have been validated through simulation, hardware testing, or operational deployment.
  • Familiarity with software development best practices, version control, and collaborative engineering workflows.


Preferred Experience
  • Master's or PhD in Aerospace Engineering, Robotics, Computer Science, Physics, Applied Mathematics, or a related discipline.
  • Experience with spacecraft rendezvous, proximity operations, docking, or formation flying.
  • Computer vision, optical navigation, or image-based state estimation.
  • Orbit determination and high-fidelity orbital propagation.
  • Sensor modeling, calibration, and measurement processing.
  • IMUs, cameras, LiDAR, radar, magnetometers, star trackers, or other navigation sensors.
  • Statistical analysis, covariance analysis, estimator tuning, and navigation performance validation.
  • Embedded flight software development.
  • Autonomous robotics, UAVs, spacecraft, or other mission-critical autonomous systems.
  • Experience supporting flight operations or post-launch system performance analysis.


Compensation Details

$120,000 - $160,000

Similar Jobs

More Jobs at Approach Venture LLC

More Aerospace & Defense Jobs

Find similar Senior GNC Engineer - Navigation & Estimation jobs: