Guidance, Navigation & Control Engineer II Verified today

Sierra Space · 2 Locations · Space Systems · first seen 2026-08-15

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. You will work independently on complex tasks while collaborating with cross-functional teams to ensure system performance and compliance with requirements.

Your responsibilities include:

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, performing in-depth analysis to identify issues and optimize system performance.
Analyze and implement autonomous GNC mode transitions to ensure system reliability and robustness.
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 a related technical field (or equivalent work experience in lieu of degree).
2+ years of relevant experience in dynamic modeling and GNC algorithm design.
Strong proficiency in SIMULINK programming and STK, with familiarity in 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 the 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 Secret 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 and accurately 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 and ability to perform relevant analysis.
Familiarity with SIMULINK autocoding and Linux systems for simulation and software integration.
Ability to take ownership of performance requirements and conduct detailed analysis to ensure compliance.
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 Requirement

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. Non-U.S. citizens may not be eligible to obtain a security clearance.

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.