Jeff THORNBURG

Portal Space Systems • Co-Founder & CEO

Jeff Thornburg is the CEO of Portal Space Systems, a next-generation spacecraft company redefining orbital maneuverability. He previously served as VP of Propulsion at SpaceX, architecting the Raptor Engine for Starship, and has held leadership roles at Amazon Kuiper, Stratolaunch, and Agility Robotics. A U.S. Air Force veteran, Thornburg contributed to the world’s first hydrogen full-flow staged combustion cycle engine. Under his leadership, Portal closed one of the largest seed rounds in aerospace and is set to launch its first mission in 2026. His work has earned awards from NASA and the Air Force, including NASA’s Space Flight Awareness Award.

Events

International Astronautical Congress 2025

29 September - 3 October 2025

Sydney, Australia

Participation: