GN&C Engineer — Lunar Spacecraft Autonomy & Navigation

Craig Technical Consulting, Inc.; Huntsville, Northern (AL, KY); Hybrid; USD 110,000 - 150,000; Full time

Job summary

Craig Technologies is seeking a Guidance, Navigation, and Controls (GN&C) Engineer to join our Huntsville, AL team. The candidate will contribute to the design, development, and testing of the GN&C system for the Lunar Data Network (LDN) spacecraft, supporting real-time GN&C flight software development, flight control automation, and autonomous deep-space maneuvering validation.

The role requires 3–5 years of experience with C/C++/Python, EKF/state estimation expertise, and familiarity with GN&C

Qualifications

• Bachelor's or Master's in Aerospace Engineering, Electrical Engineering, or related field with 3–5 years of experience.
• 3–5 years of flight or simulation software in C, C++, and/or Python.
• Experience developing, tuning, and implementing EKFs or sequential filters for spacecraft state estimation.
• Familiarity with GN&C hardware architectures (IMUs, Star Trackers, Reaction Wheels, Thruster clusters).
• Experience with relative navigation or Optical Navigation for lunar environments.
• Knowledge of spacecraft dynamics, attitude determination, and orbital mechanics.

Responsibilities

• Design, architecture development, and verification testing of GN&C system for LDN spacecraft constellation.
• Develop, test, and peer-review GN&C flight software and control algorithms in C/C++.
• Support selection, trade studies, procurement, and integration of GN&C sensors and effector systems.
• Execute 6-DOF simulations and Monte Carlo analyses for trajectory stability.
• Assist HWIL/SWIL integration testing of sensors and actuators.
• Contribute to real-time flight software development and autonomous fault-tolerant recovery logic.
• Collaborate with software, hardware, and mission ops teams.
• Document architectures, trades, and simulation results in reports and presentations.
• Other duties as assigned.

Skills

Communication

Critical thinking

Independent work

Education

Bachelor's or Master's in Aerospace/Electrical Eng

Tools

JIRA

Git

Python

Job description

Craig Technologies is seeking a Guidance, Navigation, and Controls (GN&C) Engineer to join our Huntsville, AL team. The candidate will contribute to the design, development, and testing of the GN&C system for the Lunar Data Network (LDN) spacecraft, supporting real-time GN&C flight software development, flight control automation, and autonomous deep-space maneuvering validation.

The role requires 3–5 years of experience with C/C++/Python, EKF/state estimation expertise, and familiarity with GN&C