Santiago is a partner of Quintanilla, Soria & Nishizawa Soc. Civ., and co-chair of the firm´s practices of Corporate and Commercial Law, Banking and Finance Law, and Energy and Natural Resources. His practice focuses in merger and acquisitions, greenfield projects, structuring and drafting of loan agreements and other financing agreements. His professional activities cover also matters relating to Foundations and Non-Profit Organizations, Family Law, Wills and Estate Planning.
He has served as National Director of the Registry of Commerce and Corporations of Bolivia from 2003 to 2004, and as General Counsel and Director of the Legal Department of the Ministry of Capitalization and Privatization of State Owned Companies from 2004 to 2006. He practiced as a foreign associate of O’Melveny & Myers LLP in its New York Office, where he worked mainly with the Latin American Practice Group and the Japanese Practice Group.
Since 1998, Santiago has been a partner of Quintanilla, Soria & Nishizawa and he advices national and international companies as well as organizations in complex transactions of mergers and acquisitions, investments in sustainable projects of natural resources, structuring of loans and capital contributions to Banks and other financial entities, as well as companies of different sectors. He is a member of boards of directors and síndico of many important companies. He is an arbitrator registered in the Center of Arbitration and Conciliation of the National Chamber of Commerce, and of the Center of Conciliation and Arbitration of the La Paz Bar Association, and regularly participates as a member of arbitral tribunals that deal with relevant cases in Bolivia. He also counsels clients and participates as international expert in Bolivian law in diverse international arbitrations.
Since young, Santiago has been a supporter of education and cultural activities. Among other activities, he supports non-profit organizations and foundations, in which he participates as founder, contributor and/or a board member. He was President of the Japanese Society of La Paz between 2009 and 2010, and President of the Commission of the History of the 90 Years of the Japanese Society, which was published in 2012 in both Spanish and Japanese. He is currently a board member of the National Federation of Japanese Associations of Bolivia. He is a co-founder and board member of the Fundación Cultural Boliviano-Japonesa La Paz, which administrates a Japanese Language School in the city of La Paz. Co-founder and president of the board of directors of Fundación San Juan, which was created by a group of descendants of Japanese immigrants to support the education of Bolivian young leaders of the municipality of San Juan, granting university scholarships. He is also co-founder and vice-president of the board of directors of Fundación Unisol, which supports the education of needy Bolivian children in two centers, one in the South Area of Cochabamba, and the other in the municipality of La Guardia in Santa Cruz.
He was a professor of Commercial and Economic Law at the Bolivian Catholic University, and Professor of Foreign Investments in a Master Program at the Center of Superior Studies of the Universidad Mayor de San Simón in Cochabamba.
- Master in Laws (LL.M.), Columbia Law School, New York, NY, USA, May 2004. Recognized as a Harlan Fiske Stone Scholar for his excellent academic performance.
- Master in Laws (LL.M) with mention Corporate Law and International Transactions, Chuo University, Graduate School of Law, Tokyo, Japan, March 1992.
- Juris Doctor (Licenciado en Derecho), Universidad Mayor de San Andrés, La Paz, Bolivia, March 1989.
- Harvard Law School, Cambridge, MA., USA, Program of Instruction for Lawyers, June 1996.
- Georgetown University and International Law Institute, Washington DC, USA, Program of Orientation in the U.S. Legal System, July - August, 1992.
- Public Registry of Lawyers, Ministry of Justice.
- La Paz Bar Association
- Bolivian Bar Association