Walker grew up in Waldorf, Maryland and attended North Point High School.
[5] Walker was named third-team All-Big Ten Conference after starting all nine of Penn State's games in the team's COVID-19-shortened 2020 season.
[7] After the season, Walker announced that he would forgo his remaining collegiate eligibility and enter the 2022 NFL draft.
[12] He saw his first NFL action on December 25, 2022, playing four special teams snaps in a Week 16 victory over the Miami Dolphins.
[13] He started his first NFL game on September 17, 2023, during a Week 2 loss to the Atlanta Falcons, replacing an injured David Bakhtiari at left tackle.