Propulsion Engineer Senior III

Propulsion Engineer SeniorYork Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next-generation space mission operations worldwide. Today, York is one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms. York's complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations, enabling customers to leverage York's existing technology solutions to get to orbit rapidly and responsively. We're looking to expand our team across the board.York is looking for a talented Propulsion Engineer Senior that will contribute to the growth and development of our core products. This individual will work across a variety of programs, apply different propulsion technologies, and have a direct influence on both commercial and national security missions. They will lead the design and qualification of complex propulsion systems, ensuring technical excellence from concept through flight. They will also be expected to mentor junior engineers, drive technical decision-making, and serve as primary subject matter expert for cross-functional teams.ResponsibilitiesLead the full life cycle of propulsion systems, providing technical oversight from vendor selection and AI&T through to on-orbit operations and anomaly resolution.Manage technical relationships with propulsion hardware suppliers, collaborating with internal supply chain teams to drive procurement, resolve critical non-conformances, and ensure mission success.Perform delta-v calculations based on mission requirements and subsystem performanceOwn the validation of propulsion interfaces, working cross-functionally with spacecraft systems engineers to proactively identify and resolve complex, multidisciplinary technical issues.Generate and release system-level specifications and ICDs, support design and engineering reviewsOversee and execute high-risk testing, fueling, and verification of flight and ground hardware, ensuring strict adherence to safety and quality standards.Drive the development of internal engineering standards, design tools, and best practices to optimize the propulsion department's efficiency and capabilities.Mentor and provide technical guidance to junior and mid-level propulsion engineers, fostering a culture of continuous learning and engineering excellence.Other Duties as AssignedRequired QualificationsBachelor's degree in engineering, science or a related technical field required4 - 8+ years experience in propulsion, spacecraft, launch vehicle, or related experience (Salary based on experience).Deep technical expertise in both electric and chemical propulsion systems, including a comprehensive understanding of subcomponentsProven hands-on experience qualifying, testing, and troubleshooting flight-qualification propulsion hardware and ground support equipmentDemonstrates self-initiated work in a team environmentExcellent communicator with a desire to strengthen the entire teamAbility to obtain a security clearanceWillingness to work full-time in our Greenwood Village, CO officePreferred QualificationsActive security clearanceAbility to provide ownership of the full life cycle of propulsion systems, including vendor selection,AI&T, and on-orbit operations.Experience in the design, testing, or operations of satellite propulsion systemsIn compliance with local law, we are disclosing the compensation, or a range thereof, for roles in locations where legally required. Actual salaries will vary based on several factors, including but not limited to external market data, internal equity, location, skill set, experience, and/or performance.Benefits100% employer-paid medical, dental, and vision insurance (subject to spousal surcharge).Company holidays, floating holidays, and sick time.Unlimited PTO.Generous 401(k) match.