Simonin was a member of FC Lorient from ages 12–19, making it to the club's reserve squad before being cut.[1] Before his 12 he played for AL Ploemeur.
Simonin spent the first two seasons of his college career at Lander University where he made a total of 32 and tallied two goals and three assists. He also helped lead the Bearcats to a Peach Belt Conference regular season title in 2012. After two seasons with the Bearcats, he transferred to North Carolina State University. In his first season with the Wolfpack, he made 17 appearances and finished the year with four goals and one assist. In his senior season, he made only seven appearances due to injury.
On 15 January 2015, Simonin was taken ninth overall in the 2015 MLS SuperDraftbyToronto FC. He was one of three players selected by the Reds in the first round.[5] He ended up signing with USL affiliate club Toronto FC II on 12 March.[6] He made his professional debut for the club on 21 March against the Charleston Battery.[7] After his debut, with a rash of injuries to Toronto FC's defense, Simonin was signed to an MLS deal on 27 March.[8] He went on to make his professional Major League Soccer debut on 29 March against Real Salt Lake. He was injured in that game, and as a result has only played in one other game for Toronto FC, who declined in contract option at the end of the 2016 season.[9]
