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 Curator, then an Associate Curator, and most recently as its Deputy Director. 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 comparative economic and monetary history. He publishes extensively in a range of academic journals, conference proceedings and books, including La Politique Monétaire de l'Euro (2009), Fiscal Regimes and the Political Economy of Premodern States (2015) and Le Gouvernement des Citoyens (2017). Among numerous contributions to economic history, he recently published « Capital in the Sixth Century: the Dynamic of Tax and Estate in Egypt » in Journal of Late Antiquity (2016), which addresses the question of fiscal fairness across the social spectrum in Late Antiquity. He publishes occasional Op-Eds for Newsweek, Bloomberg News, The Wall Street Journal, Les Échos and other medias.
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, and most recently at NYU.
Bransbourg was made a knight in the French Order of the Académiques Palmes in 2014. As a financial consultant and committed to philanthropic endeavors, he serves on several boards and financial committees and advises or helps a range of institutions, foundations and corporations in Europe and the US. He has contributed to the establishment of an English-French dual language curriculum in New York public schools.