Born in Montréal from haitian parents, Tatiana began dancing at the age of 2 years old, at the Académie de ballet classique de Montréal. She entered the professionnal program of the École supérieure de ballet du Québec at 8 years old.
Throughout her training, Tatiana had the chance to work on renowned pieces by some of the greatest names in dance: Forsythe, Nacho Duato et Ohad Naharin. Since 2011, she participates in Fernand Nault's The Nutcracker in the kids' roles and, since 2017, she dances the corps de ballet. In 2019, she danced in Giselle with Les Grands Ballets as a Wili. As part of the annual show of the École Supérieure, Tatiana had the chance to dance solist roles in many ballets such as Swan Lake, Giselle, Sleeping Beauty, Paquita and Sérénade.
At 19, a year before the end of her training, she joined Les Grands Ballets as an apprentice for 2019-2020.