Professor, Department of Finance and Investment Management, Faculty of Economic and Financial Sciences, University of Johannesburg, South Africa, from 2013.

Member of Editorial Board, Annals of Financial Economics, from 2013.

Member of Editorial Board, Journal of Risk and Financial Management, from 2013.

Guest Co-Editor, special issue of Journal of Risk and Financial Management, 2014.

Associate Professor, School of Mathematics, University of the Witwatersrand, Johannesburg, South Africa, 2006-2008.

Standard Bank Associate Professor in Advanced Mathematics of Finance, School of Computational and Applied Mathematics, University of the Witwatersrand, Johannesburg, South Africa, 2009-2012.

Professor, School of Computational & Applied Mathematics, University of the Witswatersrand, Johannesburg, South Africa, 2013.

Program Manager, Quantitative Finance, Department of Finance and Investment Management, University of Johannesburg, from 2014.

Member of Editorial Board, Journal of Informatics and Data Mining, from 2015.

Member of Editorial Board, Journal of Heath & Medical Economics, from 2015.