Senior Engineer (Engineer III) / Principal Engineer (Engineer IV) – Propulsion

Who We're Looking For

We are seeking an experienced Senior Engineer III / Principal Engineer IV – Propulsion Systems to lead the development of advanced flight-qualified propellant tanks and spacecraft propulsion systems supporting next-generation Ranger missions.

What It Takes

• Bachelor's, Master's, or Ph.D. in Aerospace Engineering, Mechanical Engineering, or a related technical discipline
• 7+ years of relevant aerospace or propulsion engineering experience
• Demonstrated ability to lead engineering teams through major project milestones
• Experience leading low- to medium-complexity propulsion or spacecraft development efforts
• Recognized technical contributor with strong engineering judgment and decision-making skills
• Experience managing technical schedules, program execution, and engineering priorities

Technical Expertise

• Propellant Tank Development
• Design, analysis, fabrication, testing, and integration of spacecraft propellant tanks
• Pressure vessel design standards, structural qualification, and range safety compliance
• Propellant management techniques for microgravity environments, including slosh dynamics
• Tank fabrication and welding processes, including weld evaluation and quality assurance
• Spacecraft Propulsion Systems
• Design, analysis, fabrication, integration, testing, and operation of spacecraft propulsion systems
• Spacecraft pressure systems, propulsion architecture, and range safety requirements
• Integration of propulsion systems with spacecraft avionics, structures, thermal, power, and mission systems
• Chemical and electric propulsion technologies, propulsion components, and spacecraft propulsion architectures
• Assembly, Integration, and Test (AI&T) activities supporting spacecraft propulsion subsystem verification and vehicle integration

Nice-to-Have Experience

• 3+ years leading engineering teams developing spacecraft propulsion systems or propellant tanks
• Experience supporting fast-paced aerospace, defense, or commercial space programs
• Systems engineering experience including requirements development, interface management, verification, and validation planning
• Experience applying Lean Six Sigma, project management methodologies, or continuous improvement practices
• Experience utilizing AI-enabled engineering, modeling, or design optimization tools
• Experience leading rapid hardware development programs from prototype through flight qualification
• Broad spacecraft systems knowledge beyond propulsion, including power, structures, avionics, thermal, or GNC
• Subject matter expertise in spacecraft propulsion components such as valves, regulators, thrusters, pressure vessels, feed systems, or fluid control devices

What You'll Get

• Ownership – Lead the development of mission-critical spacecraft propulsion systems and propellant tanks supporting advanced Ranger missions
• Innovation – Help develop next-generation propulsion technologies enabling agile, high-mobility space operations
• Impact – Deliver flight-ready propulsion hardware supporting national security, civil, and commercial space missions
• Growth – Join a multidisciplinary engineering team where you'll influence spacecraft architecture, propulsion technology, and mission execution
• Compensation – Competitive salary, equity, and comprehensive benefits including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity participation

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.