Walker attended Varina High School in Henrico County, Virginia, where he played running back and linebacker.
[1] An unranked recruit, he committed to play college football for the James Madison Dukes.
[2] During a three-year career at James Madison from 2021 through 2023, Walker appeared in 32 games with 20 starts, where he notched 142 tackles with eight and a half being for a loss, three and a half sacks, six pass deflections, three interceptions, four forced fumbles, and two touchdowns, while also being named an honorable mention all-Sun Belt Conference selection twice in 2022 and 2023.
[3][4][5][6] After the conclusion of the 2023 season, Walker entered his name into the NCAA transfer portal.
[9] In week three of the 2024 season, Walker notched seven tackles, with one being for a loss, in a win over UCLA.