Dec 2022 -- present, Chair Professor, School of Accounting and Finance, The Hong Kong Polytechnic University

Jun 2022 -- present, Director, Research Centre for Quantitative Finance, The Hong Kong Polytechnic University

Oct 2021 -- present, Chair Professor, Department of Applied Mathematics, The Hong Kong Polytechnic University

Jul 2013 --  Sep 2022, Professor, Department of Mathematics, NUS

Mar 2020 -- Sep 2021, Director, Centre for Finance and Financial Risk Management, NUS Chongqing Research Institute

July 2018 -- July 2021, Program Director, NUS-SJTU Master of Science in Quantitative Finance, NUS

Jul 2014 -- July 2021, Director, Centre for Quantitative Finance, NUS

July 2012 -- July 2021, Program Director, Master of Science in Quantitative Finance, NUS

Nov 2014 -- Nov 2018, Deputy Director, Risk Management Institute, NUS

July 2010 -- June 2011, Visitor, Olin Business School, Washington University in St. Louis

Jan 2010 -- Jun 2013, Associate Professor, Department of Mathematics, NUS

Jul 2004 -- Dec 2009, Assistant Professor, Department of Mathematics, National University of Singapore (NUS)

Jun 2002 -- Jul 2004, Lecturer (Jun 2022 - Jun 2003) and Associate Professor (Sep 2003 - Jul 2004), School of Mathematical Sciences, Peking University

Oct 2000 -- May 2002, Post-doctor, Institute of Mathematics, Peking University