is a professor of economic sociology at the Centre for Europe University of Warsaw. His books include Kapitalizm po polsku. Między modernizacją a peryferiami Unii Europejskiej (Capitalism in Polish way. Between modernization and the periphery of the European Union) and Elita biznesu w Polsce (Business elite in Poland). His research interests cover sociology of institutions, political and business elites, wealth and the new upper class in Poland, economic interest groups and lobbying in a comparative perspective, especially in the EU. He has previously worked as an expert of the Sejm (lower house of parliament) in the preparation of the law on lobbying in Poland.