· 3Com Founders Senior Research Scientist, Massachusetts Institute of Technology2020–
· 3Com Founders Principal Research Scientist, MIT Computer Science and Artificial Intelligence Laboratory (CSAIL)2020–
· Founding Director, MIT Internet Policy Research Initiative, Massachusetts Institute of Technology2015–
· Founding Director, MIT Internet Policy Research Initiative2015–
· US Deputy Chief Technology Officer for Internet Policy, White House Office of Science and Technology Policy2011–2012
· Associate Administrator for Policy, National Telecommunications and Information Administration (NTIA)2009–2011
· Associate Administrator for Policy, U.S. Department of Commerce2009–2011
· Member, Obama Biden Transition Team2008–2009
· Visiting Free Speech Professor, University of Bergen2008–2008
· Visiting Professor, University of Southampton2006–2009
· Founder and Director, Decentralized Information Group, Massachusetts Institute of Technology2005–2009
· Visiting Professor, University of Maryland, College Park2004–2004
· Senior Research Scientist, Massachusetts Institute of Technology1998–2020
· Technology and Society Policy Director, World Wide Web Consortium1998–2006
· Technology and Society Domain Leader / Policy Director, World Wide Web Consortium (W3C)1998–2006
· Co-Founder and Deputy Director, Center for Democracy and Technology1994–1998
· Deputy Policy Director, Electronic Frontier Foundation1991–1994
· Juris Doctor (J.D.), University at Buffalo Law School1989–1992
· Bachelor of Arts (B.A.) in Philosophy, Swarthmore College1981–1985