> Markdown version of [/jobs/ext/2526983-guidance-navigation-control-engineer-ii-with-security-clearance](https://www.wearedevelopers.com/jobs/ext/2526983-guidance-navigation-control-engineer-ii-with-security-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Guidance, Navigation & Control Engineer II with Security Clearance - **Company:** Sierra Space - **Location:** Louisville, CO, United States - **Experience:** Experienced - **Salary:** $105,534.0 - $145,109.0 - **Contract:** Permanent contract - **Skills:** C (Programming Language), Algorithm Design, Data Analysis, JIRA, C++ (Programming Language), Computer Programming, Linux, Global Positioning Systems (GPS), Revision Control Systems, Python (Programming Language), Monte Carlo Methods, Performance Tuning, Simulink, Subversion, Systems Integration, Control Structures, Reliability of Systems, Git, Lidar - **Published:** August 16, 2026 - **Apply:** https://www.adzuna.com/details/5842806187 ## About the Role * 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 with 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. * The ability to obtain and maintain a Secret U.S. Security Clearance is required. 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. ## Description 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. The selected candidate will work independently on complex tasks while collaborating with cross-functional teams to ensure system performance and compliance with requirements. This position offers the opportunity to expand technical expertise and take ownership of key GNC subsystems. In this role, you will develop, implement, and evaluate GNC algorithms, focusing on one or more areas of guidance, navigation, control, and Fault Detection, Isolation, and Recovery (FDIR). You will program and optimize simulations using SIMULINK and STK, while modeling and analyzing GNC sensors and actuators such as IMUs, GPS, star trackers, Reaction Control Systems (RCS), Reaction Wheels, Magnetic Torquer Bars, Control Moment Gyros, and LIDAR. Additionally, you will run and modify Monte Carlo simulations, performing in-depth analysis to identify issues and optimize system performance. You will analyze and implement autonomous GNC mode transitions to ensure system reliability and robustness, take ownership of a group of performance requirements by conducting relevant analysis to ensure compliance, and work with GNC flight software (FSW) in target test simulation environments to validate functionality. Furthermore, you will document technical findings and communicate results to stakeholders and team members. About You Our mission is driven by an unyielding commitment to advancing space-based technology in service of our customers and safeguarding national security. We seek individuals who are passionate about innovating beyond boundaries and relentlessly pursuing solutions that protect, preserve and empower - to join us in this critical mission. We're looking for team members who align with our values, mission and goals - while also meeting the minimum qualifications below. The preferred qualifications are a bonus, not a requirement. ## Related Videos - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [How to develop an autonomous car end-to-end: Robotic Drive and the mobility revolution](https://www.wearedevelopers.com/videos/22-how-to-develop-an-autonomous-car-end-to-end-robotic-drive-and-the-mobility-revolution) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Code to Road in < 12 hours](https://www.wearedevelopers.com/videos/1082-code-to-road-in-12-hours) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) ## Related Articles - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [The Prompt Engineer ✍️](https://www.wearedevelopers.com/magazine/216-the-prompt-engineer) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence) - [Got AI ideas but no money? Here are 10 free ways to level up your AI skills with Google Cloud](https://www.wearedevelopers.com/magazine/600-got-ai-ideas-but-no-money-here-are-10-free-ways-to-level-up-your-ai-skills-with-google-cloud) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer)