Daniel Gruenbaum is a founding partner of Gruenbaum, Rivoli e Cereja Advogados and a Professor of Law at the University of the State of Rio de Janeiro (UERJ). He holds a law degree and a Ph.D from the University of São Paulo (USP). He undertook post-doctoral studies at the Max-Planck Institute for Comparative and International Private Law in Hamburg as a Konrad Zweigert Fellow (2009) and later as a Visiting Scholar (2013).

Gruenbaum is a member of several national and international organizations, such as the German Arbitration Institute (Deutsche Institution für Schiedsgerichtbarkeit – DIS), the Asociación Americana de Derecho Internacional Privado, the German-Brazilian Jurists Association (Deutsch-Brasilianische Juristenvereinigung), the Association of Friends of the Hamburg Max-Planck Institute for Comparative Law and International Private Law (Freunde des Hamburger Max-Planck-Instituts für ausländisches und internationales Privatrecht) and the German-Brazilian Working Group, organized by the Center for Arbitration and Mediation of the Chamber of Commerce Brazil-Canada (CAM-CCBC) and DIS.

Professor Daniel Gruenbaum is frequently sought after to issue legal opinions and to act as an expert witness in judicial and arbitral proceedings. In his legal practice, combining highly specialized technical knowledge with almost 20 years of professional experience, he structures and advocates for his clients’ interests at all stages of the proceeding, including analysis of the potential chances of success, settlement opportunities and communication strategy, which can often occur in transnational cases pending simultaneously in more than one country. He has acted in more than 60 domestic and international arbitrations, in ad hoc proceedings and before the main domestic and foreign arbitral institutions. 

In addition to being a Portuguese native speaker, Daniel is fluent in English, French and German.