Five years with the Ministry of National Development, Singapore, in various positions; 20 years with Shell in the US, Europe, China and Singapore in various leadership positions spanning management, sales, marketing, trading, refinery operations, customer service, and mergers & acquisitions, including Executive Vice-President, Global Commercial, Shell Downstream, leading 6 global businesses, and led Asia Talent Council. 2011, joined PSA International as Group Chief Executive Officer; responsible for the overall performance of the PSA Group with focus on growing its port network and business partnerships worldwide. Director, Fraser and Neave; Board Member, National University Health System.