Professor Nassau joined the College of Law faculty as an adjunct instructor in 1994, became Professor of Practice in 2009, and became Teaching Professor in 2017. He has taught tax courses since 1994, and has directed the Low Income Taxpayer Clinic since its founding in 2002. He has also taught tax courses at Yale Law School, St. John Fisher College, and the William E. Simon Graduate School of Business Administration at the University of Rochester. After law school, he worked for five years as a tax associate at Sullivan & Cromwell, LLP, in New York City; and for many years he provided consulting tax counsel for the firm of Boylan Code, LLP, in Rochester, New York. Professor Nassau received a B.A. in Japanese Studies from Yale in 1981 and his J.D. from Harvard in 1986.