Justin Posthuma is on the Stephen F. Austin staff (Quarterbacks), coaching since 2026. Staff history at 1 school, the head coaches he worked under and the players he coached.
Updated Nov 9, 2026Sources: school staff directories, TransferPortl coaching tenures, CFBD
Staff History by Season
1 stint- 2026
Head Coaches He Worked Under
1- Colby CarthelStephen F. Austin, 2026
Players He Coached
5
Bryson BroadwayQB · Stephen F. Austin · 2026
Roderick Hartsfield Jr.QB · Stephen F. Austin · 2026
Jacob JanecekQB · Stephen F. Austin · 2026
JT KitnaQB · Stephen F. Austin · 2026
Gavin RutherfordQB · Stephen F. Austin · 2026
