Guidance, Navigation & Controls Engineer III/Sr

Sierra Space

Guidance, Navigation & Controls Engineer III leading design, development, and validation of advanced GNC systems for spacecraft applications. Mentoring junior engineers while driving innovation in aerospace technology.

Posted 5/24/2026full-timeCentennial • Colorado • 🇺🇸 United StatesSenior💰 $129,776 - $178,441 per yearWebsite

Tech Stack

Tools & technologies

LinuxPythonUnix

About the role

Key responsibilities & impact

lead the design, development, and validation of advanced GNC systems for spacecraft applications
take ownership of critical aspects of GNC systems, including design, Monte Carlo simulations, and hardware-in-the-loop (HITL) testing
mentor junior engineers and drive innovation in aerospace technology
develop high-fidelity models for GNC sensors and actuators, including IMUs, GPS, LIDAR, Air Data Systems, and other relevant hardware
set up and execute Monte Carlo simulations
perform open-loop and closed-loop stability analyses to ensure robust system design and functionality
integrate requirements into detailed GNC algorithm designs to ensure compliance with system-level objectives
implement relevant design standards and processes across GNC systems and subsystems

Requirements

What you’ll need

Bachelor’s degree in aerospace engineering, mechanical engineering, electrical engineering, or a related technical field (or equivalent work experience in lieu of degree)
Master’s degree is preferred for candidates with 3+ years of experience
5+ years of related experience in dynamic modelling and GNC algorithm design
Advanced skills in SIMULINK, State Flow, Python, and C++ programming, with experience in SIMULINK autocoding and Linux/UNIX operating systems
Strong understanding of IMUs, GPS, LIDAR, and Air Data Systems, with experience in developing high-fidelity models for algorithm design
An active Top Secret U.S. Security Clearance is required.

Benefits

Comp & perks

medical, dental, and vision plans
401(k) with 150% match up to 6%
life insurance
3 weeks paid time off
generous benefit package

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

GNC systems designMonte Carlo simulationshardware-in-the-loop testingdynamic modellingGNC algorithm designhigh-fidelity modelsopen-loop stability analysisclosed-loop stability analysisSIMULINKPython

Soft Skills

mentoringinnovation driving

Certifications

Bachelor’s degreeMaster’s degreeTop Secret U.S. Security Clearance