He made his debut for the club on 27 March 2010 in the 2–0 defeat away to Lyon as both the first- and second-choice goalkeepers, Jody Viviani and Ronan Le Crom, were unavailable.

It was several months until he appeared for the first team again, when he was selected for the two matches against Laval and Metz in October 2012; in the latter game he kept the first clean sheet of his senior career as Grenoble recorded a 1–0 victory thanks to a goal from Yohann Lasimant.

[citation needed] Maubleu subsequently returned to the substitutes' bench as Viviani regained his starting berth and remained there until the final game of the 2010–11 campaign when he kept goal in the 5–0 loss to Le Havre.

Maubleu went on to establish himself as the team's first choice stopper in the lower division, starting 26 league matches, although he occasionally shared goalkeeping duties with youngsters Nathan Monti and Gary Perrin.

[citation needed] On 21 August 2024, following ten years with Grenoble, Maubleu signed for Ligue 1 club Saint-Étienne on a two-year contract with the option for a further twelve months.