Gilles/Poirier won silver at both of their Grand Prix events, the 2014 Skate Canada International and 2014 Trophée Éric Bompard. These results qualified them for the 2014–15 Grand Prix of Figure Skating Final, where they placed fifth. At the 2015 Canadian Championships, they won the silver medal behind Kaitlyn Weaver / Andrew Poje. The two capped off their season with a sixth-place finish at the 2015 World Championships.