Klaas Hendrik Eller is an Assistant Professor of European Private Law at the Amsterdam Center for Transformative Private Law (ACT) and affiliated with the Sustainable Global Economic Law (SGEL) research project. He obtained his PhD from the University of Cologne (“The Constitution of Global Production”, summa cum laude, Faculty Prize) and holds law degrees from Cologne and the Université de Paris 1 (Panthéon-Sorbonne). Klaas passed the German bar exam (Referendariat) at the High Court of Berlin with secondments inter alia at the Supreme Court of the State of Israel and an international arbitration boutique. During his PhD, he was a Fellow at Humboldt-University’s European Law School Graduate Program. Before joining UvA, he was a Minerva Post-Doctoral Fellow at the Edmond J. Safra Center for Ethics at Tel Aviv University.

His research interests are centered around the role of (private) law in social and technological change, particularly through an angle of contract and economic law, alongside comparative and international private law as well as human rights. His work draws extensively on (transnational) private law theory and the history of legal thought. Klaas is part of the Institute for Global Law and Policy (IGLP) at Harvard Law School’s multidisciplinary 'Law and Global Production' Working Group, a member of the Consultative Committee of the European Law Institute's Business and Human Rights Working Group and a contributor to the project 'The Private Side of Transforming the World: The UN Sustainable Development Goals 2030 and the Role of Private International Law' (Max-Planck Institute, Hamburg). He is an editor of the German Law Journal. 

At the UvA, Klaas also serves as Academic Coordinator of the MA program “European Private Law”.

Teaching includes European Contract Law (MA), Research Training Seminar in European Private Law (MA), Making Markets Beyond the State (MA), Principles in European Contract Law (BA PPLE) and Moot Court in European Union Law (BA).