Technical Staff Member, Condensed Matter & Thermal Physics, 1986–2004.

Laboratory Fellow, 1997–present.

Fellow of the American Physical Society and American Association for the Advancement of Science.

Center Leader, Center for Nonlinear Studies, 2004–2015.

Laboratory Associate Fellow, Condensed Matter & Magnetic Sciences Group, MPA-Division, 2016–present.

CNRS Visiting Scholar, Ecole Normale Superieure de Lyon, Laboratoire de Physique, Lyon, France, 10/2016.