Software Engineer, Location & Motion (Inertial Navigation / GNSS)

About the role

Rivet is seeking an experienced Software Engineer to own the navigation and positioning stack for its head‑worn and body‑worn systems. You will turn inertial and GNSS sensor data into a robust, continuous estimate of position and orientation for demanding real‑world environments.

Key responsibilities

• Own the end‑to‑end 9‑axis inertial sensing system, including calibration, synchronization, coordinate frames, and attitude estimation.
• Develop heading and inertial navigation solutions that handle sensor errors, environmental disturbances, temperature variation, and platform effects.
• Integrate GNSS receivers, configure raw measurements, characterize signal quality, and ensure resilience in degraded positioning environments.
• Design and maintain the navigation fusion estimator that combines inertial, GNSS, and other measurements into continuous position, velocity, and attitude solutions with well‑characterized uncertainty.
• Partner with hardware, firmware, mechanical, and manufacturing teams on sensor selection, placement, power, thermal constraints, and production testing.

Required profile

• BS + 8 years, MS + 5 years, or PhD + 3 years of experience in navigation, aerospace/GNC, robotics, geomatics, or a closely related field.
• Proven track record of shipping a production navigation solution that provides position and attitude estimates.
• Hands‑on experience with inertial sensing, magnetometer calibration, heading estimation, GNSS, and sensor fusion.
• Deep understanding of strapdown inertial navigation, error‑state estimation, Kalman filtering or factor‑graph methods, observability, and uncertainty modeling.

Required skills

• C++ programming
• Python programming
• Inertial sensor calibration and characterization
• GNSS receiver configuration and raw measurement analysis
• Sensor fusion and Kalman/factor‑graph filtering
• Coordinate frames and attitude representations (ECEF, ENU/NED, quaternions)

What we offer

• Competitive base salary with potential equity
• Unlimited PTO and a comprehensive benefits package