Coming from Morocco to France at the age of 6, Kouider lived for a long time in Nanterre (Hauts de Seine). Since age of 10, he began to practice several combat sports and in 1976 he discovered Thai boxing with Roger Paschy.

From 1976 to 1984, he was 3 times champion of France and Europe, and was part of one of the first French to have boxed in Thailand at the legendary Rajadamnon stadium in Bangkok in 1981. In 1982 he was Muaythaï vice world champion in Hong Kong.

He was in many Muaythaï commission manager and committees : FBT, UST, FFSGT, FBTMTDA, FFSCDA... He still continues to train young champions within his club ESN Nanterre since 1981 and he is also technical advisor on fight scenes for the cinema.