GNC Engineer, Attitude Control Systems

Voiceflow; Burlingame (CA); On-site; USD 170,000 - 200,000; Full time

Job summary

Voiceflow, located in Burlingame, California, is seeking a Senior Engineer to develop and maintain simulations for attitude control systems (ACS), design control algorithms, and run simulations. This full-time position requires expertise in 6DOF attitude dynamics, PID control, and strong programming skills in Python, C++, and MATLAB. The salary range is competitive, with compensation between $170K and $200K, reflective of the candidate's experience and qualifications.

Qualifications

• Experience with actuator allocation, momentum management, or desaturation logic.
• Strong programming skills in Python, C++, and MATLAB.
• Experience developing unit or regression tests.

Responsibilities

• Develop and maintain 6DOF attitude simulations for ACS design.
• Design, tune, and validate control algorithms.
• Run SIL/HIL test campaigns and analyze performance.

Skills

6DOF attitude dynamics simulations

PID control design

Python

C++

MATLAB

SIL/HIL simulation

Git

Linux environments

Education

BS or MS in Aerospace Engineering, Electrical Engineering, Control Systems, Applied Physics

Job description

Location

Burlingame, California

Employment Type

Full time

Location Type

On-site

Department

Engineering GNC

Compensation

• Senior Level 1: $170K – $200K • Offers Equity

The final job level and salary will be determined based on a range of factors including the candidate’s education, qualifications, knowledge, skills, abilities, and relevant experience. The listed salary range is provided to offer insight into potential compensation, but it’s not a guarantee of the final offer. While we include the full range to be transparent, offers most often fall within the middle portion rather than the top.

Xona is the navigational intelligence company bringing real-time, centimeter-level certainty to any device, anywhere on Earth.

With Pulsar – the world’s most advanced PNT satellite infrastructure in Low Earth Orbit – Xona will offer a future-proof, backwards-compatible global positioning system optimized for absolute precision, superior power, and robust protection.

What You’ll Do

• Develop and maintain 6DOF attitude simulations for ACS design and verification.
• Design, tune, and validate PID, LQR, and optimal control algorithms.
• Develop actuator allocation logic for reaction wheels, torque rods, thrusters, or other effectors.
• Implement momentum management and desaturation algorithms.
• Support model-based development, integration, and test workflows.
• Run SIL/HIL test campaigns and analyze performance across nominal and off-nominal cases.
• Develop unit, regression, and simulation-based tests.

Required Qualifications

• Experience with 6DOF attitude dynamics simulations.
• Hands‑on experience with PID, LQR, or optimal control design.
• Experience with actuator allocation, momentum management, or desaturation logic.
• Experience with model‑based software development processes.
• Experience with SIL/HIL simulation and test environments.
• Experience developing unit or regression tests.
• Strong programming skills in Python, C++, and MATLAB.
• Proficiency with Git and Linux environments.

Desired Qualifications

• BS or MS in Aerospace Engineering, Electrical Engineering, Control Systems, Applied Physics, or a related technical field.
• Experience developing ACS algorithms for spacecraft, satellites, UAVs, or autonomous systems.
• Familiarity with reaction wheels, magnetic torque rods, thrusters, star trackers, IMUs, magnetometers, or sun sensors.
• Experience with flight software integration, embedded deployment, or real‑time systems.
• Experience with Monte Carlo analysis, robustness testing, or fault‑case validation.
• Familiarity with autocoding workflows from MATLAB/Simulink or similar tools.

For U.S. Roles: To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States (i.e. Green Card holder), or other protected individual as defined by 8 U.S.C. 1324b(a)(3).

For U.K. Roles: To comply with U.K. regulations, this role requires Baseline Personnel Security Standard (BPSS) checks, and successful candidates must be eligible to obtain UK Security Clearance (SC).

For Canada Roles: Successful candidates must obtain and hold a security clearance at the reliability status level, and pass security assessment for the Canadian Controlled Goods Program (CGP) and ITAR.

We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

Compensation Range: $170K - $200K