Julia Cagé is an Economics Professor at SciencesPo. She also serves as the Présidente of the association Un Bout des Médias and the Présidente of Societe Des Lecteurs Du Monde.

Cagé is a Membre du conseil administration at Afp. She is a recipient of the Yrjö Jahnsson Award. She has a twin sister, Agathe Cagé.