He is the Robert Garrett Professor of Politics and Public Affairs in the Department of Politics and the School of Public and International Affairs at Princeton University.

He teaches and does research on political economy and comparative politics, particular on empirical democratic theory, the choice of institutions and their consequences for growth and inequality.

He is a Faculty Associate at the Center for the Study of Democratic Politics, the  Mamdouha S. Bobst Center for Peace and Justice, and the Niehaus Center for Globalization and Governance.

He is the Director of the Institutions & Political Economy Research Group at the University of Barcelona.