Work History

Argonne National Laboratory

• Senior Scientist, 2012 – present
• Division Director, Argonne Leadership Computing Facility, 2010 – Present
• Deputy Associate Laboratory Director for Computing, Environment and Life Sciences, 2006 – Present

Research Promotion Timeline, Argonne National Laboratory, 1992 – Present

• Senior Scientist, 2012 – Present
• Scientist, 2004 – 2012
• Scientist, 2001 – 2003
• Scientist, 2000 – 2001
• Assistant Scientist, 1996 – 2000
• Scientist Associate, 1992 – 1996

Northern Illinois University

• Presidential Professor, Department of Computer Science, 2020 – Present
• Professor, Department of Computer Science, 2017 – 2020
• Associate Professor, Department of Computer Science, 2012 – 2017

University of Chicago / Argonne National Laboratory

• Senior Scientist at Large, The University of Chicago Consortium for Advanced Science and Engineering, 2018–Present
• Senior Fellow, Computation Institute, 1999 – 2018

Education

• MS, PhD – Computer Science, University of Chicago
• MS – Computer Science and Electrical Engineering, University of Illinois at Chicago
• BS, plus graduate work — Physics, Northern Illinois University