GNC Engineer

Attis; California (MO); On-site; USD 135,000 - 225,000; Full time

Job summary

Attis is seeking a GN&C Engineer to design and implement real-time guidance, navigation, and control algorithms for autonomous spacecraft in a fast-paced defense-focused environment. You will work on attitude control, state estimation, and RPO concepts with HIL testing facilities on-site in Torrance, CA.

Ideal candidates have 5+ years in spacecraft GNC, strong MATLAB/Simulink, C/C++, and Python skills, and a willingness to work 100% on-site in California. U.S.

Qualifications

• Requires a Bachelor’s or Master’s degree in Aerospace, Mechanical, or Electrical Engineering.
• 5+ years of dedicated experience in spacecraft GNC.
• Advanced programming in MATLAB/Simulink, C/C++, and Python.

Responsibilities

• Architect, test, and tune real-time GNC algorithms for relative motion, formation flying, and autonomous RPO.
• Construct ADCS alongside precise orbit determination filters.
• Model orbital dynamics and space environmental disturbance forces.
• Execute state estimation and sensor fusion using IMUs, star trackers, and LiDAR.
• Write and optimize flight algorithms in C/C++ and Python for flight systems.
• Conduct Monte Carlo performance runs and failure testing on HIL setups.

Skills

Kalman filtering

State estimation

Non-linear control

C/C++

Python

MATLAB/Simulink

Education

Bachelors or Masters in Aerospace, Mechanical, or Electrical Engineering

Tools

HIL test beds

Job description

Guidance, Navigation, and Control (GN&C) Engineer

Spacecraft Autonomy & Orbital Defense

Up to $225,000

The Company

• Developing high-performance autonomous spacecraft engineered for space safety and national defense missions.
• Integrating state-of-the-art sensing, control theory, and edge autonomy into resilient orbital systems.
• Fast-paced, mission-driven culture emphasizing direct ownership, disciplined execution, and rapid flight deployment.

Why Join?

• Solve critical orbital mechanics and state estimation challenges defending vital national space infrastructure.
• Own complete algorithm development life cycles from initial mathematical concepts to real-time flight software execution.
• Gain continuous access to advanced hardware-in-the-loop simulation facilities and flight-like testing environments.
• Thrive in an agile, zero-red-tape engineering culture with clear visibility and significant upside potential.

The Role

A technical, hands-on role where you will:

• Architect, test, and tune real-time GNC algorithms for relative motion, formation flying, and autonomous RPO.
• Construct attitude determination and control systems (ADCS) alongside precise orbit determination filters.
• Model complex orbital dynamics, satellite trajectories, and space environmental disturbance forces.
• Execute robust state estimation and sensor fusion using IMUs, star trackers, optical navigation, and LiDAR.
• Write, embed, and optimize flight algorithms in C/C++ and Python for flight systems.
• Conduct extensive Monte Carlo performance runs and failure scenario testing across HIL test beds.

The Essential Requirements

• Bachelor’s or Master’s degree in Aerospace, Mechanical, or Electrical Engineering.
• 5+ years of dedicated experience in spacecraft or satellite Guidance, Navigation, and Control (GNC).
• Advanced programming fluency across MATLAB/Simulink, C/C++, and Python environments.
• Demonstrated mastery in Kalman filtering, state estimation, and non-linear control systems.
• Active U.S. Citizenship with active TS/SCI clearance or verified eligibility to obtain one.
• Willingness for 100% on-site work location in Torrance, California.

What Will Make You Stand Out

• Direct production experience implementing autonomous Rendezvous and Proximity Operations (RPO) algorithms.
• Deep experience setting up and verifying algorithm performance inside Hardware-in-the-Loop (HIL) setups.

No terminology in this advert is intended to discriminate on the grounds of age, sex, race, religion or belief, disability, pregnancy and maternity, marriage and civil partnership, sexual orientation, gender, and/or gender reassignment, and we confirm that we are happy to accept applications from anyone for this role. Attis Global Ltd operates as an employment agency and employment business. More information can be found at attisglobal.com.