Boumal began his career with George Fominyen FC before moving to Europe in 2005 signing with CFF Paris.[2] After one year with the team from Paris he joined the youth and reserve team of AS Saint-Étienne.
In summer 2014, Boumal signed a two-year contract to Panionios for an undisclosed fee. At the end of 2014–15 season, he was linked with a move to Turkish club Mersin İdmanyurdu.[4]
On 23 December 2015, Boumal joined Panathinaikos on a 2.5-year contract for a reported transfer fee of €400,000 plus one Panathinaikos player Christos Donis, Kostas Triantafyllopoulos and Diamantis Chouchoumis.[5][6] On 11 January 2016, he made his club debut by having an appearance along with a late goal, helping his club to a 2–0 win against Kalloni.[7] On 31 January 2016, in a 3–2 away win against Platanias, Boumal broke his collarbone which required surgery and would keep him out of action for 4–6 weeks.[8]
On 6 July 2017, Boumal signed 1.5-season contract with Chinese Super League club Liaoning Whowin for a €2.2 million fee, leaving Panathinaikos after 18 months.[9]
On 14 February 2019, he returned to Panionios on a free transfer. [10]