Maarten Hillebrandt is postdoctoral researcher at the Erik Castrén Institute of International Law and Human Rights where he is involved in an international research project on the theory of the separation of powers in the EU context (SEPAROPE). He specializes in EU institutional law and politics, and has published on government transparency policy and theory in and beyond the EU. He has previously held positions at the Faculty of Sociology, Bielefeld University, and the Amsterdam Centre for European Law and Governance (ACELG), University of Amsterdam. In addition, he has been a visiting fellow at the Research Centre for the Analysis of Governance and Public Policy in Europe (LAGAPE), University of Lausanne, the Centre for European Research (CERGU), Gothenburg University, and the European University Institute (EUI), Florence. In 2017, he defended a dissertation on the historical development of the access to documents policy of the Council of the EU at the University of Amsterdam. This dissertation was subsequently awarded the annual Van Poelje Prize for the best dissertation in the field of public administration in the Netherlands and Flanders. Maarten's research interests include the policy and politics of information, transparency theory, EU institutional politics, socio-legal research, and informality. In the NORFACE-funded research project Separation of Powers for the 21st Century (SEPAROPE, 2020-2022), Maarten focusses on the role of transparency and parliamentary scrutiny as elements of a concept separation of powers normatively and institutionally suitable for the European Union.