Justin has been a solicitor of the HKSAR since 2003. He first practiced as a commercial litigator in a number of leading international law firms in Hong Kong. He subsequently worked at different global investment banks in Hong Kong, covering the areas of securities and financial regulations, legal and compliance.

Justin has also been teaching the PCLL both on a full-time and part-time basis since 2007, at City University of Hong Kong and the University of Hong Kong, covering a range of different subjects. Justin was Senior Lecturer at the (then) Department of Professional Legal Education of the University of Hong Kong between 2016 and 2024. He is currently Senior Teaching Consultant at the University’s School of Law.