[8] He also signed an entry-level contract with the Flames,[7] and joined Calgary's American Hockey League (AHL) affiliate, the Abbotsford Heat on an amateur try-out agreement after Gatineau was eliminated from the QMJHL playoffs.

[15] Poirier recorded his first NHL point with an assist on a goal by Mikael Backlund on March 3, 2015, against the Philadelphia Flyers.

Un-signed over the summer, Poirier without an NHL deal, accepted a professional try-out contract to begin the 2018–19 season, with the Manitoba Moose, affiliate to the Winnipeg Jets, on October 4, 2018.

Returning to attend the Manitoba Moose training camp, Poirier was signed to a professional tryout contract to begin the 2019–20 season on October 4th, 2019.

On July 19, 2022, Poirier returned to North America after signing as a free agent to a one-year AHL contract with his hometown club, the Laval Rocket.

[21] After attending training camp, Poirier was unable to make the Rocket season-opening roster and was reassigned to ECHL affiliate, the Trois-Rivières Lions, before later opting to terminate his contract before the commencement of the 2022–23 season on October 20, 2022.

[22] On October 27, 2022, Poirier resumed his European career by signing a one-year contract with the German club, Iserlohn Roosters of the Deutsche Eishockey Liga (DEL).