Ambrosia EnergyCofounder and CEO
Dec 2025 — Present
Ben Longmier builds continuous solar-and-battery power as cofounder and CEO of Ambrosia Energy. A plasma physicist and Swarm Technologies cofounder, he previously co-led Starlink Mobile at SpaceX and helped develop argon Hall thrusters for its satellites.
Ben Longmier builds continuous solar-and-battery power as cofounder and CEO of Ambrosia Energy. A plasma physicist and Swarm Technologies cofounder, he previously co-led Starlink Mobile at SpaceX and helped develop argon Hall thrusters for its satellites.
Career
SpaceXSenior Director, Satellite Engineering
Jun 2021 — Jun 2025
Swarm TechnologiesCTO and Cofounder
Jan 2017 — Nov 2021
Apollo FusionCTO and Cofounder
Aug 2016 — Jul 2021
Phase FourCofounder
Mar 2015 — Apr 2017
University of MichiganAdjunct Professor, Aerospace Engineering
Mar 2015 — Mar 2017
AppleManager, R&D
Mar 2015 — Jun 2016
Aether IndustriesFounder and CEO
Jan 2010 — Mar 2015
Ad Astra Rocket CompanyPrincipal Research Scientist
Jun 2009 — Jun 2012
University of HoustonAdjunct Faculty
2009 — 2012