Éwanjé-Épée was born in Poitiers, France. She won the 1985 European Junior Championships 100 metres hurdles title in 13.10 secs. In 1988, she reached the Olympic final in Seoul, finishing seventh. In 1989, she won the 100 metres hurdles titles at both the Jeux de la Francophonie and the Universiade. In March 1990, she won a silver medal in the 60m hurdles at the European Indoor Championships in Glasgow, behind Ludmila Narozhilenko of the Soviet Union.