Member of two Arbitration Tribunals under the American Arbitration Association (AAA) and one under the Arbitration Institute of the Stockholm Chamber of Commerce (SCC), and many other ad hoc, national and international Arbitration Tribunals, and under several Costa Rican arbitration institutions.
Designated as Appointing Authority by the Permanent Court of Arbitration (CPA), established at The Hague, and appointed arbitrator in four cases by said institution.
Vicepresident of the Ibero-American Arbitration Centre (CIAR) (2015- ).
Member of the Permanent Court of Arbitration (2013-2019).
Member of the American Association of Private International Law (ASADIP) (2011- ).
Member of the Latin American Arbitration Association (ALARB) (2011- ).
Member and President of 12 Arbitration Tribunals and member and President of three Ad Hoc Annulment Committees under ICSID and member of other 5 Arbitration Tribunals also under ICSID (2010-2016).
Member of the Panel of Arbitrators of the Center for Mediation and Commercial Arbitration of the Argentine Chamber of Commerce (2008- ).
Member of four (President of two) Arbitration Tribunals under the Court of Arbitration of the International Chamber of Commerce (ICC). (2008- )
Member of the Panel of Arbitrators of the Costa Rica-Mexico Free Trade Agreement (2008- ).
Member of the World Bank Group Sanctions Board (2007-2013).
Member of the of Board of Directors the Central Bank of Costa Rica (2006-2010).
Member of the International Chamber of Commerce’s (ICC) Latin American Arbitration Group (2004- ).
President of the Board of Directors of the Costa Rican Committee of the International Chamber of Commerce (ICC) (2002- 2004).
Member of the Panel of Arbitrators and the Panel of Conciliators of the World Bank’s International Centre for Settlement of Investment Disputes (ICSID) (1999-2016).
Coordinator of the Government's Economic Team (1996 –1998).
In charge of the Ministry of the Presidency (1995- 1996)
First Vice-President of the Republic of Costa Rica (1994- 1998),
Congressman to the Costa Rican National Legislative Assembly (1990- 1992).
Alternate Justice to the Costa Rican Supreme Court (1983-1990).
President of the Board of Directors of the Costa Rican Bar Association (1982-1983).
Professor of Commercial Law, Law School, University of Costa Rica (1966-1974).