Clean sheet design and analysis of fluid & mechanical vehicle components including tanks, feed systems, propellant management, and fluid systems • Support rapid development cycles of new designs and changing requirements including testing, data analysis and hands-on hardware work • Design modifications of existing components and prototypes to increase performance, improve manufacturability or resolve limitations • Collaborate with the manufacturing, analysis, and test teams to reduce part-to-part variation and discrepancies • Assemble and test first article prototypes • Lead propulsion subsystem architecture and requirements definition for hypersonic vehicles • Own subsystem-level propulsion trades, performance margins, and integration decisions • Serve as the technical authority for propulsion interfaces with vehicle structures, thermal, avionics, GNC, and mission engineering • Develop and manage propulsion requirements, verification plans, and compliance evidence • Collaborate closely with vehicle and systems engineers to ensure mission and performance alignment • Support ground test and flight test planning, execution, and post-test data analysis • Identify propulsion system risks and drive mitigation strategies across design, manufacturing, and test • Provide technical leadership and mentorship to early- and mid-career engineers • Support customer technical reviews, design reviews, and technical interchange meetings • Contribute to proposal development, including technical approaches, architectures, and risk posture. This role sits at the intersection of propulsion design, vehicle integration, systems engineering, and test, with ownership from early concept through flight demonstration and production transition.