"Professor of Biochemistry, Department of Biochemistry and Microbiology, Rhodes University (January 2013- present) President of the South African Society for Biochemistry and Molecular Biology (SASBMB) (2010-2012) Associate Professor, Department of Biochemistry, Microbiology and Biotechnology, Rhodes University (January 2010-December 2012) Senior Lecturer, Department of Biochemistry, Microbiology and Biotechnology, Rhodes University (January 2005-December 2009) Head of Biochemistry, Department of Biochemistry, Microbiology and Biotechnology, Rhodes University (January 2007-December 2012) Visiting Scholar (August 2006) Section of Molecular & Cellular Biology, Life Sciences, University of California Davis, Davis, California, USA. EBRU (Environmental Biotechnology Research Unit) Research Fellow(June 2003-present) Visiting Lecturer (June-July 2004): Department of Biological Sciences with Prof K. Hanninen at the University of Jyvaskyla, Jyvaskyla, Finland Rhodes University Biochemistry Lecturer (January 2000-December 2004) University of Cape Town Chief Scientific Officer /Postdoctoral Fellow (June 1997- Dec 1999): Dept of Chemical Pathology, UCT Medical School, and Dept of Biochemistry, UCT (June 1997- Dec 1999) Visiting Scientist (October 1996): Ludwig Maximilians University in the Dept of Clinical Chemistry and Clinical Biochemistry in the Surgical Clinic and Policlinic, Munich, Germany. University of Port Elizabeth Biochemistry Lecturer (Contract) (July 1995-Sept 1996)/University of Port Elizabeth Biochemistry Part Time Research Assistant(Feb 1990-Sept 1996)"

Enzymes, Enzyme Inhibitors and the Bioeconomy