From 1995 until 2004 he taught at Columbia University in New York, where he was associate professor of international political economy and a member of the Institute of War and Peace Studies.
In 1995, Walter Mattli was awarded the Helen Dwight Reid Award of the American Political Science Association, in 2003 the JP Morgan International Prize in Finance Policy and Economics of the American Academy in Berlin, and in 2006 a two-year British Academy Research Fellowship.
He serves also as editor (with Liesbeth Hooghe and Gary Marks) of a new book series with Oxford University Press titled Transformations in Governance.
He is the winner (with Alex Stone Sweet of Yale Law School) of the open competition for the editorship of the 50th anniversary special issues of the Journal of Common Market Studies published in March 2012.
Walter Mattli highly specializes in research and publications on issues of global economic governance.