Wong started his career when he joined United Press International in 1983, at the age of 21. He subsequently worked for Reuters as sub-editor, as well as editor-in-charge, photographer, chief photographer and deputy news pictures editor at different news bureaus and headquarters including Hong Kong, London, Singapore and Beijing.
From 1998 to 2004, he worked as chief photographer at the Reuters Beijing bureau where he was in charge of the greater China region. Upon joining Getty Images in 2004, he set up Getty's first editorial bureau in China and was in charge of the operation up until the end of the 2008 Beijing Olympics.
Wong served as jury member for the World Press Photo Contest in 1998 and 2003.