in 2019 An
Istres youth graduate, Boulaya made his professional debut on 11 May 2012, coming on as a substitute for
Maxime Tarasconi in a 1–0 defeat away at
Lens. On 31 August 2016, Boulaya signed a four-year deal for Ligue 1 side
Bastia. However, he only appeared in two matches for the club. On 25 July 2017, Boulaya moved abroad for the first time in his career, after agreeing to a three-year deal with
La Liga side
Girona. In January 2018, he joined
Metz on loan. On 21 August 2022, Boulaya signed a two-year contract with
Al-Gharafa in Qatar. ==International career==