Ray’s early career was spent on working with children and young people having emotional and behavioural problems in Hong Kong.  Having worked at the New South Wales Department of Health and Department of Community Services in Australia, he had set up a home, and a Home and Community Care (HACC) programme for people with intellectual disabilities and mental disorders.  

Between 1992 and 2004, Ray had taught social work at the City University of Hong Kong.  Commissioned by various government departments in Hong Kong, he had also provided training for government officials, school teachers and rehabilitation practitioners. 

Ray embarked a career on public service management since 2004.  He first served as the Head, Central Health Education Unit, Centre for Health Protection, Department of Health, HKSAR Government.  He then took up Chief Executive Officer positions in Wai Ji Christian Service and Yan Oi Tong in Hong Kong.  These NGOs provide services for people with disabilities and mental disorders; and social, educational and medical services respectively. 

Concerning public services, Ray was appointed by the HKSAR Government as member of boards and committees including the Guardianship Board, Health Care and Promotion Fund Sub-committee and Committee on Elder Academy Development Foundation, Elderly Commission. 

Ray’s practice and research interest lies in public health, mental health, health promotion, developmental disabilities, migration studies, public administration and management of non-profit organisations.