Ambassador and Permanent Representative to the World Trade Organization (WTO), to the World Intellectual Property Organization (WIPO) and to United Nation Conference on Trade and Development (UNCTAD) since October 2005. He is currently Chair of the WTO General Council. He has also chaired the Committee on Trade and Environment in Special Session and the Working Group on the accession of Ukraine to the WTO.
He served before as Director for Bilateral and Multilateral Economic Affairs of the Ministry of Foreign Affairs, Chief Trade Negotiator of the Chilean FTAs with China, European Union, EFTA, Korea, Trade Coordinator for Chile-US and Free Trade Agreement of the Americas (FTAA), as well as APEC Senior Official (2000-2005) and Chair of various Groups. Chair of the World Wine Trade Group (WWTG).
From 1994 to 1998 he was Minister in charge of Trade at the Embassy of Chile to the United States in Washington D.C. His other posts have been Trade Advisor to the Undersecretary of Foreign Affairs (1992-1993) and Delegate to the GATT during the Uruguay Round negotiations (1987-1991).
He has been Professor and Visiting Professor of Law and International Relations in various universities in Chile and the United States.
He has a Law degree from Universidad de Chile (1980) and Law, Economics, and International Politics at Oxford University, Queen Elizabeth House, St. Edmund Hall (1986-1987)
WTO panelist, SIECA panelist and other bilateral FTAs.