Graduate as a General Engineer from the Mines ParisTech, the Paris Institute of Political Studies (IEP) and the National School of Administration (ENA), Gilles Denoyel was appointed as a Finance Inspector at the Ministry for the Economy and Finance in 1981 before joining the Treasury Department in 1985, where he held various positions until 1996 . He joined the CCF group in 1996 as Chief Financial Officer, then General Secretary in charge of Strategy and Operations, before serving as Deputy Chief Executive Officer in charge of Finance.