Grier Wilt is the Deputy Director of NASA's Operations in Star City, Russia, overseeing all NASA astronaut training at the Gagarin Cosmonaut Training Center. Prior to her current role, Grier worked as a spacewalk engineer at the NASA Johnson Space Center in Houston, TX. In this capacity, she served as an ExtraVehicular Activities Task Instructor and Flight Controller, training astronauts for spacewalk missions aboard the International Space Station.

Outside of work, Grier served as the curator of the Global Shapers Houston Hub, and has actively volunteered in the Houston community through the Junior League of Houston, FBI Citizens Academy, and mentoring through Big Brothers Big Sisters and the Partnership for the Advancement & Immersion of Refugee (PAIR). She is a private pilot and enjoys reading and being active in the outdoors.