His parents sent him to England for a year to learn English, at St Martin's preparatory school in Northwood, Middlesex.

In 1986, Lévy moved to Ministry of Posts, Telegraphs, and Telephones under secretary of state Gérard Longuet, acting as technical advisor and consultant for international affairs and industry.

After a period at Matra Space as director of communications satellites, after the return to power of the Socialist Party, he returned to the French civil service under government under Longuet as his executive secretary, retaining the position in the Ministry of Industry, Posts and Telecommunications and Foreign Trade under Jose Rossi.

[3] In October 2014, he replaced Henri Proglio as the CEO of Électricité de France[4] His period as CEO proved difficult, with declining profits and EDF's market value halving by March 2016, when the chief financial officer resigned over investment decisions.

[5][6] Lévy was appointed a Chevalier of the Légion d'honneur, and an Officier of the Ordre national du Mérite.