Principal Engineer, Propulsion

Company: Quantum Space
Location: Rockville
Posted on: February 18, 2026

Job Description:

Job Description Job Description Salary: $170,000 to $220,000 Who Were 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 Youll 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 Bachelors, Masters, 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 Youll 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, HSA, 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.

Keywords: Quantum Space, Arlington , Principal Engineer, Propulsion, Engineering , Rockville, Virginia