Mostefa was born in Dijon, France, to an Algerian father and a French mother.[2] His father is originally from the town of Mazouna in the Relizane Province in Algeria.[3]
Club career
On 6 June 2011, Mostefa signed a two years contract with newly promoted Ligue 1 side AC Ajaccio.[4]
On 7 August 2014, Mostefa moved to FC Lorient for a three years contract because he's interested with the club project.[5]
On 27 August 2015, Bastia reached an agreement with Lorient to sign Mostefa.[6]
International career
On 30 October 2010, Mostefa was called up to the Algeria national team by head coach Abdelhak Benchikha for a friendly against Luxembourg.[7] He made his debut in that game as a starter, before being substituted off in the 69th minute.[8] On 30 March 2011, Mostefa played his first official match for Algeria in a 2012 Africa Cup of Nations qualifier against Morocco.[9] He played the entire match as Algeria went on to win 1–0.