Brief CV:

• Diplom in Mathematics with Computer Science as minor from the RWTH Aachen, 1988;
  for the Diplom thesis Endliche Körper in dem gruppentheoretischen Programmsystem GAP (compressed PostScript [205k] in German).
  
• PhD in Mathematics from the Australian National University, 1994;
  for the dissertation Central extensions of polycyclic groups (gzipped PostScript [270k] ).

Current Position:

• In November 2007 I took up a position at the Hesse Ministry of Science and Art.

Research Interests:

• Computational group theory
• Theory and computational aspects of polycyclic groups, a GAP 4 package for computation with polycyclic groups is available.
• GAP: Groups, Algorithms and Programming

Software:

• ANU Nilpotent Quotient Algorithm
• GAP 4 package for computation with polycyclic groups
• ANU PQ Gap 4 Share Package

Useful and interesting mathematical links

• The MacTutor History of Mathematics archive by John O'Connor and Edmund Robertson.
• The Group Pub Forum
• E.A. O'Brien maintains a BibTeX bibliography of references in algebra (200k) which is also available in gzipped form (40k).
• A PostScript file (262k) with a survey of Computational Group Theory by Akos Seress is available. A shorter version has been published in the Notices of the AMS.