New York Jets Mauldin was selected by the
New York Jets in the third round (82nd overall) of the
2015 NFL draft. He signed a four-year, $3 million contract on May 7, 2015. in 2019 Mauldin played his first regular season game on September 13, 2015, against the
Cleveland Browns, where he forced a
fumble off
Johnny Manziel. However, after forcing the fumble, he suffered an apparent neck injury, was rendered unconscious for a few minutes, carted off the field, and taken to a local hospital. After undergoing tests, he was diagnosed with a concussion and no serious neck injury. During his rookie season in 2015, Mauldin played 15 games making 10 tackles, 4 sacks, and a fumble recovery. On September 4, 2017, Mauldin was placed on
injured reserve after dealing with a back injury throughout
training camp. On September 1, 2018, Mauldin was released by the Jets.
Hamilton Tiger-Cats Mauldin signed with the
Hamilton Tiger-Cats of the
Canadian Football League (CFL) on April 15, 2019. He played in 11 regular season games where he recorded seven defensive tackles, seven
special teams tackles, and three sacks. He did not play in 2020 due to the cancellation of the
2020 CFL season, and opted to sign a one-year contract extension on January 4, 2021. He played in six games where he had six defensive tackles, five special teams tackles, one sack, and one forced fumble. 2022 was a breakout year for Mauldin. He led the league with 17 sacks and won the
CFL's Most Outstanding Defensive Player Award. As a pending free agent, Mauldin and the Redblacks agreed to a one-year contract extension on January 18, 2023. On January 10, 2025, Mauldin and the Redblacks agreed to a one-year contract extension.
Calgary Stampeders On September 28, 2025, Mauldin was traded to the
Calgary Stampeders, in exchange for a fourth-round selection in the
2026 CFL draft.
Louisville Kings On February 11, 2026, Mauldin signed with the
Louisville Kings of the
United Football League (UFL). On March 4, 2026, Mauldin announced his retirement ==Personal life==