Thierry Kalfon started his career with the Budget Department in the French Ministry of Economy, Finance and Industry, where he assumed various responsibilities, including Head of Research, Energy and Innovation Division and Deputy Director in charge of “sovereign” budgets (Interior, Justice, Defense, local governments, Prime Minister’s general services). From 2001 to 2005, he was a Senior Economist in the Fiscal Affairs Department in the International Monetary Fund (IMF) in Washington DC (USA), in charge of the fiscal part of structural adjustment programs in various countries in the Middle-East and in Asia. From 2007 to 2009, he was a Senior Advisor to the French Ecology, Energy and Sustainable Development Minister, in charge of industrial, economic and financial affairs. In 2009, he joined GRTgaz as Chief Financial Officer. In 2012, he was appointed Director of Strategy, Economics and Tariffs for ENGIE Energie France, covering power generation and energy supply activities in France. From 2014 to 2016, he was General Secretary and CFO of ENGIE’s renewable energy activities in Europe. Since 2016, he has been Director of Financial Planning and Analysis (FP&A) within ENGIE’s Group Finance Department.