William has handled scores of international arbitrations before each of the major arbitral institutions, including the LCIA, ICC, ICSID, ICDR, and AAA. He has handled arbitrations with seats throughout the United States, as well as London, Germany, Mexico City, and others. He has handled arbitrations with a wide variety of governing law, including Texas law, New York law, English law, German law, Mexican law, and others.

William is a member of the AAA Roster of Neutrals, the International Centre for Dispute Resolution (“ICDR”) Roster of Neutrals, and the AAA National Energy Panel of Neutrals. He was selected by the Center for American and International Law (Institute for Energy Law Section) for inclusion on the Energy Arbitrators List. He has completed the AAA arbitrator training course, and has served as an arbitrator in multiple commercial cases.

William has given multiple presentations and articles, mostly focusing on practical aspects of international arbitration and litigation. He speaks throughout North and South America in both English and Spanish.