Sexton Professor of Philosophy, Claremont McKenna College  2007-present
Fagothey Distinguished Visitor, Santa Clara University Spring  2007
Co-coordinator, Program in Philosophy, Politics, and Economics  2006-present
Professor, Claremont McKenna College  2006-present Professor, Pomona College  2002-2006
Associate Professor, Pomona College  1994-2002
Invited Visitor, University of Pittsburgh   Spring 1998
Visiting Associate Professor, University of Arizona  Fall 1994
Assistant Professor, Pomona College   1988-1994