Staff GNC Software Engineer

The future of aerospace and defense starts here.

Ursa Major was founded to revolutionize how America and its allies access and apply high-performance propulsion, from hypersonics to solid rocket motors, satellite maneuvering and launch. We design and deliver propulsion and defense systems that solve the most urgent and critical national security demands.

Our products and technologies require an extraordinary team. A team that will mold tomorrow’s technologies while deploying today’s best. We are an intrinsically motivated team that has a passion for solving problems and empowering each other every day to develop our skills, knowing that there is always room for growth.

As a GNC Software Engineer you will develop, implement, and validate guidance, navigation, and control algorithms in software for flight systems in aerospace and defense applications. This role translates GNC concepts into robust, flight-ready software, working across simulation, embedded implementation, and hardware-in-the-loop environments. You will own well-defined subsystems or features, and collaborate closely with systems, avionics, propulsion, and test teams to ensure GNC software meets performance, safety, and mission requirements.

Responsibilities:

Design, implement, and maintain flight GNC software for aerospace applications

Translate GNC requirements and models into efficient, reliable embedded software

Develop and execute simulations to evaluate guidance, navigation, and control performance

Support system integration, hardware-in-the-loop (HIL), and flight test activities

Analyze test and flight data to assess performance and drive improvements

Contribute to requirements definition, verification, and traceability for GNC functions

Identify and mitigate technical risks through analysis, testing, and peer review

Collaborate cross-functionally with systems, avionics, software, and test engineers

Document designs, analyses, and test results for internal and external stakeholders

Required Qualifications:

Bachelor’s degree in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Computer Science, or related field

Professional experience developing GNC algorithms or flight software for aerospace or defense systems

Strong understanding of classical control, estimation, and vehicle dynamics

Experience implementing algorithms in C/C++ or similar embedded languages

Experience with modeling and simulation tools such as MATLAB/Simulink or equivalent

Familiarity with real-time or embedded software development environments

Ability to work effectively across disciplines and communicate technical concepts clearly

Ability to work effectively in teams or individually

Desirable Experience:

Master’s degree in a relevant engineering discipline

Experience with navigation sensors (IMUs, GPS, star trackers, etc.) and state estimation techniques (e.g., Kalman filtering)

Exposure to hardware-in-the-loop testing, flight testing, or operational flight systems

Familiarity with safety-critical or regulated development environments (e.g., DO-178 or equivalent processes)

Experience with Python or similar scripting languages for analysis and tooling

Prior experience supporting aerospace or defense programs through integration and test phases

Colorado law requires us to tell you the base compensation range of this role, which is $150,000 - $185,000, determined by your education, experience, knowledge, skills, and abilities. What we can’t quantify for you are the exciting challenges, supportive team, and amazing culture we enjoy. Click here for more information about our awesome benefits.

Classification: Full-time Exempt

Benefits Include: (Please note, Interns are not eligible for benefits)

Unlimited PTO - Vacation, Sick, Personal, and Bereavement

Paid Parental and Adoptive Leave

Medical, Dental and Vision Insurance

Tax Advantage Accounts (HSA/FSA)

Employer Paid Short and Long Term Disability, Basic Life, AD&D

Additional Benefit Options Including Voluntary Life and Emergency Medical Transport

EAP Program

Retirement Savings Plan - 401k with Company Match

Equity Grants in the Company

• How To Apply:
• Interested candidates are encouraged to apply by filling out the application below and clicking "Submit Application". This position will be posted for a minimum of 3 days and will remain open until filled or adjusted based on the volume of applicants.

NOTE: Research suggests that women and BIPOC individuals may self-select out of opportunities if they don't meet 100% of the job requirements. We encourage anyone who believes they have the skills and the drive necessary to succeed here to apply for this role.

Must be a U.S. Person (this includes U.S. Citizens and Permanent Residents).

Eligibility to obtain and maintain a U.S. Security Clearance.

We’re an equal-opportunity employer. You will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

No outside recruiters, please.