A veteran information and communications technology (ICT) professional with over 30 years of experience, Dr Mok was the Director of PolyU's Information and Technology Services Office in the mid-1990s. Since ceasing to be Secretary General at the Hong Kong Computer Society in 2006, she has been contributing to IT profession and education on a mostly volunteer basis by spearheading IT professional certification and holistic rehabilitative services, and serving as an external examiner for University of South Wales, UK.
Dr Mok has also been active in her participation in public and social services. A recipient of the Medal of Honour from the SAR Government in 2014, she has been offering expert advice on IT-related issues to various government bureaus and offices. In addition, she has been Vice Chairperson of the Hong Kong Society for Rehabilitation since 2010, and is currently Chairperson of the Accessible Transport Services and Digital Transformation Committees.