A graduate from Lionel Groulx College's Theatre Program of 2014, Joakim Robillard is a performer opened to the artistic world and driven by a need to learn, evolve, and provoke. 

Quickly after graduation, Joakim takes his first steps on the big screen in François Peloquin's feature film, Le bruit des arbres, with Roy Dupuis as his acting partner. He is also a part of Chasse-Galerie, a film by Jean-Philippe Duval. In 2021, he takes on the role of Maxime, the lead character in Souterrain, second film by Sophie Dupuis. This remarkable performance leads to his nomination at the Gala Quebec Cinema for "Revelation of the Year" and at the Canadian Screen Awards for "Best Male Interpretation in a Dramatic Role." He comes back to cinema in 2023 with Crépuscule pour un tueur by Serge Rivard.

In 2022, he lands one of the main roles in Télé-Québec's new web series Entrelacés, a role which earned him a Gémeaux nomination, and defends with great sensitivity the role of Bryan Lussier in Mégantic, a series directed by Alexis Durand-Brault. He collaborated again with the director in Désobéir: le choix de Chantale Daigle. Since 2022, Joakim has been starring in L'air d'aller, a Télé-Québec series which tells the story of a quartet of friends suffering from cystic fibrosis. He is also featured in the television series Indéfendable by Stéphane Simard and STAT by Danièle Méthot.

On stage, Joakim plays in Temps Zéro at the Theatre Tombé du Ciel under Charles Dauphinais' direction. He is part of the cast of 5 balles dans la tête, a play directed by François Bernier. He also took part of the large cast of Rome, in a production by Brigitte Haentjens for Usine C in 2023, a re-imagining of five Shakespeare plays in a translation by Jean-Marc Dalpé.