He discovered fencing when he was five, while watching fellow French Caribbean Laura Flessel win the gold medal in the 1996 Summer Olympics at Atlanta.

[2] He began fencing at CREPS in Les Abymes, Guadeloupe, where he trained under Ruddy Plicoste along with Jean-Paul Tony Helissey and Ysaora Thibus.

After the fencing section of the Lagardère Paris Racing was dissolved, Lefort joined the Cercle d'Escrime Melun Val de Seine.

In the 2013–14 season Lefort won the Challenge International de Paris, his first World Cup medal,[5] and climbed the podium in Venice, Saint-Petersburg and Havana.

[6] In the team event, No.2 seeded France received a bye, then knocked out Hong Kong, Germany and hosts Russia to meet China in the Final.