Gilles Bransbourg won the French nationwide Concours Général award in History at the age of 17 in 1982 and then studied Economics, Mathematics and Statistics in Paris at Lycée Louis-Le-Grand, École Polytechnique, Sciences Po and École Nationale de la Statistique et de l'Administration Économique from 1983 to 1990. He became a market economist, specialized in financial derivatives, and held executive positions in the banking sector until running his own financial advisory company and investments since 2005. By 2010, Bransbourg had completed a PhD in History at École des Hautes Études en Sciences Sociales.
He joined NYU’s Institute for the Study of the Ancient World in 2009, first as a Visiting Research Scholar and then Research Associate, and the American Numismatic Society in 2011 as an Adjunct and then an Associate Curator in 2016. He has supervised Online Coins of the Roman Empire and curated the exhibition Signs of Inflation at The Federal Reserve Bank of New York in 2012.
His research deals with the economic and monetary aspects of the Greco-Roman world, with a comparative aim at other periods of history and a srong focus on the history of money. He publishes extensively in a range of academic journals, conference proceedings and books.
A frequent guest speaker in academic colloquiums and venues, he lectured in Economics at Sciences Po between 1990 and 1994, at the Executive Master of Finance of Sciences Po between 2007 and 2015, now teaches at NYU, jointly with ANS Curator Dr. P. van Alfen. Bransbourg also co-authored La Politique Monétaire de l'Euro (2009) and has been a contributor to Newsweek, Bloomberg News, Les Échos, and other medias. Bransbourg was made a knight in the French Order of the Académiques Palmes in 2014.
As an independent financial consultant, he serves on several boards and financial committees and advises a range of institutions and corporations in Europe