Vimont is a senior fellow at Carnegie Europe. His research focuses on the European Neighborhood Policy, transatlantic relations, and French foreign policy.
In March 2016, Vimont was appointed special envoy for the French initiative for a Middle East Peace Conference. Previously, he had been nominated the personal envoy of the president of the European Council, Donald Tusk, to lead preparations for the Valletta Conference between EU and African countries to tackle the causes of illegal migration and combat human smuggling and trafficking.

Prior to joining Carnegie, Vimont was the first executive secretary-general of the European External Action Service (EEAS), from December 2010 to March 2015. During his thirty-eight-year diplomatic career with the French foreign service, he served as ambassador to the United States from 2007 to 2010, ambassador to the European Union from 1999 to 2002, and chief of staff to three former French foreign ministers. He holds the title, Ambassador of France, a dignity bestowed for life to only a few French career diplomats.

Vimont speaks French, English, and Spanish and is a knight of the French National Order of Merit. He holds a degree in law from Pantheon-Sorbonne University, and is a graduate of the Paris Institute of Political Studies (Sciences Po) and the National School of Administration (ENA).