Guidance, Navigation & Controls Engineer II/III Verified today

Sierra Space · 2 Locations · Space Systems · first seen 2026-07-30

About the Role

Sierra Space is seeking a Guidance, Navigation & Controls Engineer II to contribute to the design, analysis, and implementation of advanced GNC systems for spacecraft applications. This mid-level role is ideal for engineers with foundational experience in dynamic modeling, algorithm design, and simulation analysis.

In this role, you will:

Develop, implement, and evaluate GNC algorithms, focusing on guidance, navigation, control, and Fault Detection, Isolation, and Recovery (FDIR)
Program and optimize simulations using SIMULINK and STK
Model and analyze GNC sensors and actuators: IMUs, GPS, star trackers, Reaction Control Systems (RCS), Reaction Wheels, Magnetic Torquer Bars, Control Moment Gyros, and LIDAR
Run and modify Monte Carlo simulations to identify issues and optimize system performance
Analyze and implement autonomous GNC mode transitions
Take ownership of performance requirements by conducting relevant analysis to ensure compliance
Work with GNC flight software in target test simulation environments to validate functionality
Document technical findings and communicate results to stakeholders and team members

Minimum Qualifications

Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, or related technical field (or equivalent work experience)
2+ years of relevant experience in dynamic modeling and GNC algorithm design
Strong proficiency in SIMULINK programming and STK
Familiarity with C, C++, Python, and version control tools such as GIT/SVN
Fundamental knowledge of GNC algorithms and experience designing at least one of: guidance, navigation, control, or FDIR algorithms
Understanding of working principles of IMUs, GPS, star trackers, RCS, non-propulsive actuators (Reaction Wheels, Magnetic Torquer Bars, Control Moment Gyros), and LIDAR
Ability to obtain and maintain a U.S. Security Clearance

Preferred Qualifications

Strong fundamental knowledge of dynamic modeling, control, guidance, or navigation algorithm design, state-space systems, SISO, and MIMO systems
Ability to estimate workload independently on short-term tasks, including JIRA tickets
Experience running Monte Carlo simulations and performing in-depth analysis to troubleshoot and optimize GNC systems
Strong understanding of autonomous GNC mode transitions
Familiarity with SIMULINK autocoding and Linux systems for simulation and software integration
Experience working with GNC flight software in target test simulation environments and conducting validation testing
Knowledge of spacecraft subsystems including power and thermal systems, communication antennas, and control structure interaction principles
Effective communication skills and ability to work collaboratively in a team environment

Compensation

Pay Range: $105,534.00 - $145,109.25

Your actual base compensation will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education, experience, internal equity and market competitiveness.

Security Clearance

This position requires the ability to obtain and maintain a U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment.

Benefits

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