Miami Dolphins On May 4, 2012, he signed with the
Miami Dolphins as an undrafted free agent. On August 25, 2012, he was released among roster cuts.
Hamilton Tiger-Cats On October 1, 2012, he signed with the
Hamilton Tiger-Cats of the
Canadian Football League. After a brief stay in Canada (one recorded sack for the Tiger-Cats), he returned to Texas to be available for NFL opportunities.
New York Jets On December 4, 2012, he signed with the
New York Jets to join the practice squad. On December 31, he was signed with the
New York Jets to a reserve/future contract. He was released on August 31, 2013.
Buffalo Bills Smith signed with the
Buffalo Bills on December 30, 2013.
Tampa Bay Buccaneers Smith signed with the
Tampa Bay Buccaneers on September 10, 2014, after the team had waived rookie defensive end Scott Solomon. Since joining Tampa Bay Smith was able to go from a rotational defensive lineman to beating out
William Gholston for the starting defensive end position. Under Lovie Smith's Tampa 2 system Smith has recorded 17 combined tackles, 13 solo tackles, 6.5 sacks, and 1 forced fumble for the 2014 season in only 8 starts. On November 1, 2015, Smith left with an ankle injury in Week 8's matchup against the
Atlanta Falcons. On November 6, 2015, the
Tampa Bay Buccaneers ruled Smith out for Week 9's matchup against the
New York Giants. On November 13, 2015, the Buccaneers ruled Smith out for Week 10's matchup against the
Dallas Cowboys. On November 22, 2015, Smith was cleared to play in Week 11's matchup against the
Philadelphia Eagles. On December 4, 2015, the
Tampa Bay Buccaneers ruled Smith out for Week 13's matchup against the
Atlanta Falcons due to a hamstring injury. On September 12, 2016, Smith was placed on injured reserve after he sustained a right knee injury in the season-opening win against the
Atlanta Falcons. On October 5, 2017, Smith was released by the Buccaneers.
Detroit Lions On October 18, 2017, Smith signed with the
Detroit Lions. He was released on October 28, 2017, but was re-signed two days later. He was waived on November 14, 2017.
Arizona Cardinals On July 26, 2018, the
Arizona Cardinals signed Smith to a one-year contract. He was released by the Cardinals on September 24, 2018.
Oakland Raiders On November 5, 2018, Smith was signed by the
Oakland Raiders. He played in three games before being placed on injured reserve on November 26, 2018, with an Achilles injury.
Seattle Dragons Smith was selected by the
Seattle Dragons in the
2020 XFL draft. He had his contract terminated when the league suspended operations on April 10, 2020.
Regular season ==Personal life==