He played college football for the UCLA Bruins and signed with the Commanders as an undrafted free agent in 2023.

[2] Allen also helped Tulare Union win the 2017 Central Section Division II championship and finished his high school career with 6,276 rushing yards, 1,603 receiving yards, and 121 total touchdowns.

[2] He also finished first in the 100-meter dash at the 2018 California Interscholastic Federation (CIF) state finals with a time of 10.44s.

[2][3] Allen signed a National Letter of Intent to play college football for the Bruins at the University of California, Los Angeles (UCLA).

[11] Allen was waived by the team on August 27, 2024, and joined their practice squad the following day.