Sierra Marsh joined the Southeastern University Athletic Training team in July of 2021. 

Prior to SEU, Marsh was an assistant athletic trainer at her alma mater of Harding University in Arkansas where she worked with the volleyball program. She also has experience with track, baseball, soccer, tennis, and softball during her time as a student athletic trainer at Harding. 

Marsh also served as an athletic trainer at Harris and Renshaw Physical Therapy, working with the Arkansas Baptist football team