Robeiri was born in Cayenne, French Guiana. He began fencing at age 8 at the Éclaireuses et Éclaireurs de France, an interreligious scouting association. He first practiced foil, the traditional learning weapon, before turning to épée.
Robeiri's early fencing journey began in Cayenne, French Guiana at the Éclaireuses et Éclaireurs de France, an interreligious scouting association where he first learned foil, the traditional learning weapon, before switching to épée.