Swanson signed with the Indianapolis Colts as an undrafted free agent in 2013.
[2] He ended his college career as the all-time leader in interceptions at Sam Houston State, with 14.
One contributing factor to his being undrafted was that he tore his hamstring two weeks before the NFL Combine.
He signed with the Indianapolis Colts in time for the 2013 season, but was placed on the injured reserve and was waived on October 29.
[7] On October 20, 2015, Swanson was signed to the practice squad of the Tampa Bay Buccaneers.
On September 12, he was released to make room for defensive end Ryan Davis.