Tum has extensive experience designing and leading various research projects across diverse fields in local and international contexts. His latest role as a consultant for Action Against Hunger (Cambodia) include conducting a final evaluation of a multi-sector project comprising of WASH, agriculture, food security and nutrition, and gender.
Before this, he was a Water Governance Specialist with HYDROC Gmbh (Germany), and a Senior Research Fellow with the Center for Khmer Studies (Cambodia), where he led research design and experiments in the field. He is completing his doctorate in Environmental Economics and Natural Resources at Wageningen University (Netherlands) after graduating with an MSC. in Interdisciplinary Studies from Michigan State University (United States), and an MSc. in Hydrology/Hydrogeology from Uppsala University (Sweden).