Ioannis has enjoyed an extensive career in public service. He was appointed Chairman of the Board of Directors and Chief Executive Officer of the Greek National Tourism Organization (GNTO) in 2009. Before that, he served as the Head of Cabinet of the Deputy Minister of Foreign Affairs (2004-2007) and was Special Advisor to the Hellenic Parliament from 2002 to 2004. Ioannis has also established a strong presence in the think-tank community. He served as Chairman of the Board of Directors and Executive Director of the Hellenic Centre for European Studies (EKEM), the Greek Foreign Ministrys institute responsible for drafting policy proposals related to European policy issues. Prior to this, he was a Research Fellow at the International Center for Black Sea Studies, focusing on energy security issues. Before launching Rollerdeck Associates, Ioannis was an independent strategy and communications consultant for several professional associations, foundations and companies. He holds a Master of Science in Foreign Service from the Edmund A. Walsh School, Georgetown University and received his Bachelors degree from Panteion University of Social and Political Sciences in Athens.