Stéphane joined CMS Francis Lefebvre as a partner in 2007 after spending 15 years in top positions within the French government. Stéphane coordinates the tax litigation and controversy group of the firm on domestic and international tax issues and headed the Tax Practice Group of the CMS network from 2009 to 2014.

Stéphane, as a former member of the Conseil d'Etat, France highest administrative court, is an authority in handling high profile litigations. He also enjoys an extensive experience on international taxation and the interpretation and application of tax treaties.

After attending Ecole Nationale d'Administration (ENA) from 1991 to 1993, Stéphane began his career at the Conseil d'Etat, the French highest administrative court. He went on to become Advisor on tax policy to both Dominique Strauss-Kahn, who was at the time Minister of Economy, Finance and Industry, and Christian Sautter, the former Secretary of State for Budget.

He then returned to work for the Conseil d'Etat as Government Commissioner for one of its tax chambers. At the same time, Stéphane became an associate professor of tax litigation and tax law at Université Paris I Panthéon Sorbonne, and Legal Counsel to the Treasurer. From 2003 to 2007, he was Financial Counsellor to the French Embassy's economic department to Japan.

Stéphane has written many articles on domestic and international tax issues, including in Japanese speaking tax journals. He is a member of the board of the French branch of International Fiscal Association (IFA) and headed the organization representing tax lawyers in France (IACF) between 2014 and 2017. As a member of the International Tax Group (ITG), Stéphane belongs to the editorial advisory board of International tax law reports (ITLR). He was co-reporter with Michel Collet for France at the IFA annual meeting (2010) on “Tax treaties and tax avoidance: application of anti-avoidance provisions”. He is a member of Europlace steering committee and a regular speaker in Europlace international forums.

Stéphane is fluent in English and French and speaks some Japanese.