Principal Engineer, Propulsion

Who We’re Looking For

Quantum Space is redefining mobility and maneuverability in space. Our high-mobility spacecraft platforms support national security, civil, and commercial missions with unmatched flexibility and propulsion capability. We build fast and iterate quickly.

We are seeking a Principal Propulsion Engineer to lead the design and delivery of innovative propulsion subsystems and components. This position offers the opportunity to work hands-on with groundbreaking technologies; from concept to development to on-orbit operations.

Where You’ll Make an Impact

• Lead in-space propulsion subsystem and component development across the entire lifecycle, from initial design and analysis to build, test, and flight operations.


• Build high-functioning teams.


• Collaborate with a high-performing, cross-disciplinary team in a fast-paced, mission-driven environment.


• Apply creativity and engineering rigor to solve complex propulsion challenges and deliver on stakeholder requirements.

What It Takes

• Bachelor’s, Master’s, or Ph.D. in Aerospace or Mechanical Engineering.


• 10+ years of experience in the design, analysis, build, test, and operation of space propulsion systems, including:

• Leading a team from design to delivery of in-space propulsion system.


• Ownership of schedules and budgets.


• Ability to communicate across engineering disciplines and with project management.

• Familiarity with the test, integration, and operation of propulsion components for space vehicles (e.g., tanks, valves, filters, pressure transducers, pumps, thrusters/engines).


• Strong leadership skills, with an emphasis on building high-functioning teams.


• Familiarity with engineering analysis tools.


• Adaptability in an evolving environment.


• Strong commitment to continuous learning and mentoring.

Nice-to-Have Experience

• Experience innovating in a fast paced start-up culture.


• Advanced propulsion analysis expertise using tools such as MATLAB/Simulink, CFD, FEA, Surface Evolver, and GFSSP.


• Experience with CAD tools.


• Strong background in risk management.


• Programming skills in Java, Python, Julia, and/or C++.


• Familiarity with 5S (6S) and Lean Six Sigma.

What You’ll Get

• Leadership – Opportunities to lead teams and drive mission objectives.


• Innovation – A chance to set propulsion standards and develop test strategies for next-generation spacecraft.


• Impact – See your work fly on unique, high-profile missions.


• Growth – A technical leadership path in a fast-growing space company with bold ambitions.


• Compensation – Competitive salary, equity, and top-tier benefits, including medical, dental, vision, generous leave, FSA, 401(k) matching, and equity sharing

Additional Requirements

To comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual per 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Apply now. Join us in building the next generation of spacecraft.