Executive Director of the ESSEC Institute for Geopolitics & Business, fostering research, graduate, and executive education programs at ESSEC Business School exploring how companies can anticipate and adapt to geopolitical disruptions. Before joining ESSEC Business School, he served as Advisor to the French Minister for Development and International Partnerships, contributing to France’s international cooperation agenda. Thomas is also the Founder and CEO of the Open Diplomacy Institute, a non-partisan think tank dedicated to developing policy and leadership solutions to the polycrisis that hinders progress toward the UN Sustainable Development Goals (SDGs). He launched and chaired the Y20 Summit in 2011 and the Y7 Summit in 2019, creating global youth engagement platforms, embedded in the G20 and G7 diplomatic processes. His leadership in multilateral diplomacy and sustainable development has been recognized internationally: he was awarded with the Engagement Medal of the French Republic (2021), appointed Laureate of the Giverny Award for Leadership in Sustainability (2022), named as an SDG Goalkeeper by the Gates Foundation (2023) and as an Aspen Young Leader (2024).

