Guillaume Dumesnil, based in Paris, FR, is currently a Managing Director M and A at Messier Maris & Associés, bringing experience from previous roles at Societe Generale and Ernst & Young. Guillaume Dumesnil holds a 2003 - 2005 ESSEC MBA in Business @ ESSEC - ESSEC Business School. With a robust skill set that includes Accounting, Research, Marketing, Financial Reporting, Strategy and more, Guillaume Dumesnil contributes valuable insights to the industry. Guillaume Dumesnil has 2 emails on RocketReach.