[6] In 2012 he signed for Glory and fought It's Showtime -95 kg champion Danyo Ilunga in his debut on 23 March 2013 in London,[7] losing by a flying knee KO in round two.

[8][9] He won the NDC -100 kg/220 lb title with a decision win over Abderhamane Coulibaly at La 20ème Nuit des Champions in Marseille, France on November 23, 2013.

[10][11] In February 2016, Stephane fought Ludovic Providence for the K-1 Event Light Heavyweight Championship -95 kg title.

[13] During the June 2017 Monte Carlo Fighting Masters event, Stephane fought Sergej Maslobojev for the WAKO World K-1 94 kg title.

In the semifinals, he defeated Wladimir Tok by a third-round TKO, but lost the final bout against Arnold Oborotov by decision.