| 2008 – |
Chair, Department of Statistics, University of Toronto |
| 2003 – 2009 |
Director, National Institute for Complex Data Structures |
| 2006 – 2007 |
Interim Chair, Public Health Sciences, University of Toronto |
| 2005 – 2006 |
Associate Chair, Public Health Sciences, University of Toronto |
| 1999 |
Invited Visiting Professor, Department of Statistics, Stanford University |
| 1999 |
Invited Visiting Professor, Departement de Mathematiques, Ecole Polytechnique Federale de Lausanne |
| 1998 – 1999 |
Graduate Chair, Department of Statistical and Actuarial Sciences, University of Western Ontario |
| 1997 |
Invited Visiting Professor, Department of Statistics, University of Chicago |
| 1992 – 1993 |
Mathematics Tutor, Lady Margaret Hall, University of Oxford |