Graduated from Collège Lionel-Groulx Theatre option in 2012, it is cinema that will give Jean-Simon the chance to explore his profession more in depth. 

He will make his debut on the big screen with the director Rodrigue Jean who will offer him to defend the role of Bruno in the film L’amour au temps de la guerre civile, for which he will obtain in 2016 a nomination at the Quebec Cinema Gala for “Best supporting actor”. Subsequently, he landed many roles on television, notably in Alertes, Cérébrum, Plan B, Fugueuse 2, Trauma, En tout cas and Jérémie.

On stage, he played under the direction of Claude Poissant in Marie Tudor at the Denise-Pelletier Theatre and of Loui Mauffette in Chansons pour filles et garçons perdus at the Aujourd’hui Theatre. 

On the big screen, director Karl Lemieux chose him as the first role in his feature film Maudite Poutine, produced by Métafilms. He was also directed by Léa Pool in the film Et au pire on se mariera, by Philippe Lesage in Genèse and Sophie Dupuis chose him to defend the role of JP in Chien de garde, role for which he was nominated for “Best male interpretation - first role” at the Québec Cinema Gala in 2018. Secondly acclaimed during the same year, he won the “Male Interpretation Prize” at the Saint-Jean-de-Luz International Film Festival for this role. In 2023, we had the pleasure to see him in Anik Jean’s Les hommes de ma mère. 

In parallel, Jean-Simon doesn't hesitate to involve himself in various short film projects, notably his last creation Traité de docilité,  which was chosen by the Sélection SODEC Clermont-Ferrand Short film festival.