About Jeffery Thornburg
Jeffery Thornburg is CEO & CTO, director at Portal Space Systems.
Experience
This experience comes from Jeffery Thornburg's profile and from SEC filings. For roles taken from filings, the years are when the filings name Jeffery Thornburg in the role, so the role may have started earlier or lasted longer.
Portal Space Systems Inc. Current
CEO & CTO, director
CEO & Co-founder (2021 – Present)
2021 – Present · Bothell, WA
Builds maneuverable spacecraft for defense and commercial missions.
CL
Creative Destruction Lab Current
Mentor/Associate - Space Stream
2021 – Present
ST
Stratolaunch Current
Advisor
2017 – Present
CS
Commonwealth Fusion Systems
Chief of Engineering
2022 – 2024
UM
Ursa Major
Advisor
2021 – 2023
SI
Sintavia
Advisor
2022
AR
Agility Robotics
Sr. VP of Engineering
2021 – 2022
IT
Interstellar Technologies
Founder
2015 – 2022
AM
Amazon
Director - Hardware, Mechanical Engineering - Kuiper
2020 – 2021
SP
SpaceX
VP / Sr. Director of Propulsion Engineering
2011 – 2015
NA
NASA
Lead Engineer/Project Manager
2009 – 2011
AE
Aerojet
Engineering Director - Liquid Propulsion
2006 – 2009
EI
Exquadrum, Inc.
Director of Technology
2004 – 2005
AL
Air Force Research Laboratory
Program Manager/Chief Engineer
2000 – 2004
UF
US Air Force
Active Duty Officer
1994 – 2003
Key Colleagues at Startups
The people Jeffery Thornburg works with at each company, as listed on that company's latest Form D.
Portal Space Systems Inc. · Form D, Mar 26, 2026
RA
Rayfe Gaspar-Asaoka
Partner at Geodesic Capital and director
Ian Vorbach
CRO and director
Prashaanth Ravindran
VP of Engineering and director