Shaffer grew up in Ellenwood, Georgia and attended Cedar Grove High School.

He was rated a three-star recruit and initially committed to play college football at Louisville during his junior year.

[1] Shaffer flipped his commitment to Georgia shortly before National Signing Day.

[7] Shaffer was selected in the sixth round with the 190th pick by the Atlanta Falcons in the 2022 NFL draft.

[18] On October 21, 2024, Shaffer was signed by the San Antonio Brahmas of the United Football League (UFL).