Career
He usually plays as a defender. Oulhaj is currently attached to Raja Casablanca. Jean-Yves Chay was the coach of Raja Casablanca when Oulhaj played his first official match with the team on September 22, 2007 against Olympique Khouribga in Complexe OCP. Oulhaj was only 19 years old and was chosen as a starter.
On October 19, 2008, he scored his first goal in his professional career during a 5-0 winning match against Chabab Massira.
On June 14, 2008, he made his first match with the team in Kigali against Rwanda when Morocco lost 3-1. Oulhaj had started the match and was replaced by Hicham Aboucherouane in the 36th minute.