Began his domestic career playing for the Denver Barbarians. Internationally, Smith has 20 caps for the Eagles, his first coming on November 8, 2008, in a win against Uruguay. Signed with Saracens of the Aviva Premiership before eventually leaving for a career in the National Football League. Was a member of the NFL’s New York Jets from April 3, 2012, to August 26, 2013. Following his release from the Jets, Smith rejoined Saracens.