Nathan Greiner

Maj Nathan Greiner, USAF

Maj Greiner joined DARPA in July 2018 as a program manager in the Tactical Technology Office (TTO). His research interests include advanced power and propulsion technologies for land, sea, air, and space applications.

Before joining DARPA, Maj Greiner completed a one-year fellowship at the Oak Ridge National Laboratory in Oak Ridge, Tennessee, where he focused on materials research. Previously, he served as a deputy branch chief and hypersonics research engineer in the U.S. Air Force Research Laboratory’s Aerospace Systems Directorate at Wright-Patterson Air Force Base, Ohio. He also has held positions as a liaison officer with U.S. Special Operations Command at Camp Lemonnier, Djibouti, and program manager for U.S. Special Operations Command at MacDill Air Force Base, Florida.

Maj Greiner holds a Doctor of Philosophy in aeronautical engineering from the Air Force Institute of Technology, a Master of Science in mechanical engineering from the University of Utah, and a Bachelor of Science in mechanical engineering from the University of St. Thomas in St. Paul, Minnesota. 

He currently manages the Glide Breaker hypersonic defense, Demonstration Rocket for Agile Cislunar Operations (DRACO) nuclear thermal propulsion (NTP), and Advanced Full Range Engine (AFRE) programs for DARPA TTO.