· Visiting Scholar, Columbia Law School2008–
· Associate Professor, University of Colorado Law School2004–
· Attorney-Advisor, U.S. Department of Justice, Office of Legal Counsel1999–
· Law Clerk for Justice Harry A. Blackmun and Justice Stephen G. Breyer, U.S. Supreme Court1998–
· Law Clerk for Judge Merrick B. Garland, U.S. Court of Appeals for the District of Columbia Circuit1997–
· Law Clerk for Judge Denise L. Cote, U.S. District Court for the Southern District of New York1996–