Wissenschaftsrat
From 2005 until 2008, he was a member of the German Council of Science and Humanities (Wissenschaftsrat) before becoming a member of the Scientific Committee of the European Union Agency for Fundamental Rights (2008–2013). From 2010 until 2015, he was a Senior Emile Noël Fellow at New York University. From 2013 until 2019, he was Partner Investigator at the “Normative Orders” cluster of excellence in Frankfurt/Main.