Da-Wen Sun is a leading educator in food engineering and a Professor of Food and Biosystems Engineering and the Director of the Food Refrigeration and Computerised Food Technology Research Group at University College Dublin (UCD).

His main research activities include cooling, drying, and refrigeration processes and systems; quality and safety of food products; bioprocess simulation and optimization; and computer vision technology. His innovative studies on vacuum cooling of cooked meats, pizza quality inspection by computer vision, and edible films for shelf life extension of fruit and vegetables have been widely reported in national and international media.