He joined EDF in 1991, where he first held various positions in hydraulic engineering until 2002 . Among his responsibilities, he was in charge of implementing EDF hydropower command centers and took part in international projects, mainly in South America. Marc Benayoun, a graduate of ESSEC Business School, started his career in the Paribas Group in 1989, before joining The Boston Consulting Group in 1993 . He became Associate Director at the Paris office in 2001, then at the Moscow office in 2008 . During this period, he took on various responsibilities, including the development of the company's natural gas expertise and activities.