· Dean, University of Maryland, College of Computer, Mathematical, and Natural Sciences2018–
· Dean of the College of Computer, Mathematical, and Natural Sciences, University of Maryland, College Park2018–
· Interim Vice President for Research, University of Maryland, College of Computer, Mathematical, and Natural Sciences2016–
· Interim Vice President for Research, University of Maryland, College Park2016–
· Director of the Institute for Advanced Computer Studies (UMIACS), University of Maryland, College Park2010–2018
· Director of UMIACS (University of Maryland Institute for Advanced Computer Studies), University of Maryland, College Park2010–
· Director, University of Maryland, Institute for Advanced Computer Studies (UMIACS)2010–
· Professor, University of Maryland, College Park1997–