He played college football for the Florida Atlantic Owls and was selected by the Tennessee Titans in the sixth round of the 2010 NFL draft.

In 2014, he had offseason stints with the New York Giants and later the Calgary Stampeders of the Canadian Football League (CFL).

[6] Smith made his NFL debut on November 21, 2010 against the Washington Redskins after starter Vince Young left the game with an injured throwing hand, completing 3-of-9 passes for 62 yards and one interception.

Titans head coach Jeff Fisher later declared that Smith would become the team's starting quarterback due to Young's season-ending thumb surgery and Kerry Collins' calf injury.

[10] Smith signed with the Calgary Stampeders of the Canadian Football League (CFL) on June 4, 2014.

He is a teacher at Rift Valley Academy, a Christian boarding school operated by AIM.