| 01/2012 | Professor (Chair) of Applied Mathematics (W3),
Universität Bayreuth, Germany. |
| 10/2009 -12/2011 | Professor of Numerical Analysis and Fellow
of Exeter College, University of Oxford, England. |
| 02/2007 - 09/2009 |
Professor (Chair) of Applied Mathematics, University of Sussex,
England. |
| 10/2006 - 01/2007 |
Reader in Applied Mathematics, University of Sussex, England. |
| 10/2005 - 02/2006 | Acting Full Professor of Scientific
Computing (W3), TU Dresden, Germany. |
| 07/2005 - 06/2006 | Consulting Software Development, MSC.Software Corporation. |
| 11/2002 - 10/2006 | Assistant/Associate Professor
(Privatdozent, C2), University of
Göttingen, Germany. |
| 01/2000 - 05/2000 | Visiting Assistant Professor, Texas
A&M University, USA. |
| 03/1999 - 11/2002 | Scientific Assistent (C1), University of
Göttingen, Germany. |
| 08/1995 - 10/1998 | Research Assistent, University of Göttingen. |
| 05/2011 | Professor (Chair) of Applied Mathematics (W3),
Technische Universität Hamburg-Harburg, Germany. |
| 03/2011 | Professor (Chair) of Applied Mathematics (W3),
Universität Köln, Germany. |
| 12/2010 | Professor (Chair) of Applied Mathematics (W3)
Universität des Saarlandes, Saarbrücken, Germany. |
| 01/2008 | Professor (Chair) of Numerical Mathematics
(W3), FernUniversität Hagen, Germany. |
| 11/2006 | Professor (Chair) of Applied Mathematics,
University of Leicester, England. |
| 04/2006 | Senior Assistant Professor, Texas A&M University, USA. |
| 02/2006 | Associate Professor, Illinois Institute for
Technology, USA. |