On 11 April 2015, Mimoune faced undefeated Spanish boxer "Ferino V"
Ceferino Rodríguez in
Benidorm, Spain. Mimoune won the eight-round bout by unanimous decision. On 16 January 2016, Mimoune defeated Kamal Mohamed to win the France welterweight title in
Toulouse. He won the bout by unanimous decision, avenging a prior loss to Kamal when the two fought in 2013 in
Clermont-Ferrand. On 10 March, the
EBU ordered Mimoune and Spanish boxer
Kerman Lejarraga the opportunity to face off for its European Union welterweight title vacated by
Paulie Malignaggi. However, on , Lejarraga's team withdrew from the title opportunity. He was replaced by undefeated Spanish prospect "El Sultan" Nabil Krissi for an event scheduled for in
Noisy-le-Grand, France, featuring a triple-headliner of bouts between Spaniards and Frenchmen vying for European Union titles. Mimoune defeated Nabil Krissi by
technical knockout in the fourth round to claim the EU title. On 17 December 2016, Mimoune defeated Damien Martin by unanimous decision to retain the European Union title in Noisy-le-Grand. On 31 March 2017, Mimoune defeated
Jussi Koivula by unanimous decision to retain the European Union title. On 7 October, Mimoune defeated British welterweight
Sam Eggington to win the European championship in
Manchester, England. He dominated the bout but won by split decision. On 20 January 2018, Mimoune faced undefeated Argentine boxer Emiliano Dominguez Rodriguez for the vacant IBO world title last held by
Julius Indongo. He defeated Rodriquez by unanimous decision to win the IBO light-welterweight title in Paris, France. On 20 October, Mimoune defeated Franck Petitjean by unanimous decision to retain his IBO light-welterweight title in
Dakar, Senegal. ==Personal life==