Dionysia Leolei serves as the AeroSpace & Defence Senior Advisor and Global Head of the AeroSpace & Defence Sector Division at TUBACEX, focusing on strategy and business development in the aerospace and defence industries since April 2022. With extensive experience as a Senior Management Consultant for the Premium Concept consulting firm, Dionysia has advised Fortune 500 companies, SMEs, and government entities since November 2015. Previous roles include Senior Consultant for NATO, Senior Advisor at Amazon Web Services, and consultant for various airlines and aviation companies. Educational credentials include a Master's degree in International Association Management from Solvay Brussels School of Economics and Management and a Bachelor's degree in Business Administration from Technological Educational Institute of Patras.