He began playing football at John Burroughs School,[1] where he was a standout on special teams with future Dallas Cowboys running back Ezekiel Elliott.

Oluokun noted that NFL front offices tend to assume that Ivy League players are a lower caliber of athletes, requiring him to work harder to prove his ability to play professionally.

Oluokun attended pre-draft visits with multiple teams, including the Kansas City Chiefs, Arizona Cardinals, and Indianapolis Colts.

[5] At the conclusion of the pre-draft process, Oluokun was projected to be a seventh round pick by the majority of NFL draft experts and scouts.

[11] He impressed coaches with his athleticism and tackling ability during camp and began competing against Duke Riley to be the starting weakside linebacker.

[12] Head coach Dan Quinn named Oluokun a backup middle linebacker, behind Deion Jones, to begin the regular season.

On October 7, 2018, Oluokun earned his first career start and recorded five combined tackles as the Falcons lost 41–17 at the Pittsburgh Steelers in Week 5.

[15] Throughout training camp, Oluokun competed against Duke Riley, Stephone Anthony, Bruce Carter, and Jermaine Grace for a role as a backup linebacker.

[17] In Week 10, Oluokun earned his first start of the season at inside linebacker and recorded a season-high seven solo tackles (eight total) in a 26–9 win at the New Orleans Saints.

[23] In Week 2 of the 2020 season against the Dallas Cowboys, Oluokun forced two fumbles on consecutive drives in the first quarter; both were recovered by the Falcons, who lost 40–39.

[26] In Week 12 against the Las Vegas Raiders, Oluokun strip-sacked Derek Carr; the ball was recovered by teammate Jacob Tuioti-Mariner during the 43–6 win.