Mr. Vivas is Legal Officer, at the Trade, Environment, Climate Change and Sustainable Development Branch, DITC at UNCTAD. He was also Senior Economic Affairs Officer, Trade Negotiations and Commercial Diplomacy Branch at the same organization; Deputy Programmes Director at ICTSD; Senior Attorney at CIEL; Attaché for Legal Affairs at the Mission of Venezuela to the WTO and Staff Attorney at the Venezuelan Institute of Foreign Trade.

Mr. Vivas is an international expert with more than 20 years of experience on legal and economic issues. He possesses strong managerial, leadership and negotiations skills and more than 10 years of experience in strategic planning, programmatic design, implementation, team building, fundraising and setting of impact assessment systems. He has lectured on intellectual property, trade, oceans economy and environmental law at the University of Strasbourg (CEIPI), Universidad de Buenos Aires (Argentina), Universidad Javeriana (Colombia), Maastricht University (the Netherlands), WIPO Distant Learning Academy, and University of Business and International Studies (Switzerland).