He played college football for the Iowa Hawkeyes, where he was a unanimous All-American and a three-time All-Big Ten selection.

[18] He entered training camp and competed for a role as a backup inside linebacker against Zaire Anderson, Joseph Jones, Jerrol Garcia-Williams, and Keishawn Bierria.

[19] In his second career NFL regular season game versus the Oakland Raiders, Jewell recorded two combined tackles.

[20] In Week 4 of the 2020 season against the New York Jets on Thursday Night Football, Jewell recorded a team high ten tackles and sacked Sam Darnold twice during the 37–28 win.

[23] On December 11, 2022, Jewell recorded two interceptions and nine tackles in a 34–28 loss to the Kansas City Chiefs.