A civil engineer from the Ecole des Mines de Paris and holder of the Master El Karoui, Julien worked for 25 years in the financial sector. He held different positions in Corporate and Investment banks (SG, Merrill Lynch, RBS, Crédit Agricole CIB), especially on bond markets (trading and origination).

For a few years, he’s been an independent consultant, a speaker and an associate expert at the Veblen institute. In 2021, with Alain Grandjean, he wrote the book L’illusion de la finance verte (Editions de l’Atelier).