Tassos holds an Economics degree from Athens University of Economics and Business, along with M.S. and Ph.D. degrees in Agricultural Economics from the University of Georgia in the U.S. Tassos joined the European Commission in 1989, initially working briefly in agricultural markets. He later joined the agricultural outlook unit of DG for AGRI. In 1996, he relocated to Washington, DC, serving as the Ag Counsellor of the EC Delegation in the US. In 2000, he became a member of the Cabinet of European Commissioner for Agriculture Franz Fischler, offering advice on the 2003 reform and holding the role of Deputy Head of Cabinet during the Doha Round of WTO negotiations. In 2004, Tassos returned to DG AGRI and retired in the summer of 2022 as the Director for Strategy and Policy Analysis, a position he held since 2009. After retiring from the European Commission, Tassos is currently focused on studying how various best farm practices affect agricultural productivity, with a particular emphasis on their environmental impact, in addition to economic and social aspects. Tassos Haniotis is a (non-resident) Senior Guest Research Scholar at the International Institute of Applied Systems Analysis in Laxenburg, Austria. He is a member of the Scientific Advisory Board of two Horizon Research Projects, of the EU Council High Level Group on Biosphere Economy Innovation, and of the EU Nitrogen Expert Panel.