PhD (1984), Department of Physics, Harvard University. Thesis: The U(1) Higgs Model Advisor: Professor Arthur M. Jaffe
B.A. Experimental Physics (1980), B.A. Mathematics (1980), Trinity College, Dublin, Ireland.
Department of Mathematics, Cornell University, Ithaca NY: H.C. Wang Assistant Professor (1987-1991).
Department of Physics, Princeton University, Princeton NJ: Instructor (1984-1987).
Communications Network Research Institute, Dublin Institute of Technology, Dublin, Ireland (January - June 2002).
Theory Group, Microsoft Corporation, Redmond, Washington (1998), (1999).
Theoretical Physics, Eidgenossische Technische Hochschule (ETH), Zurich, Switzerland (1986), (1988).