Dr Hak holds a PhD in Mechanical and Environmental Informatics from the Tokyo Institute of Technology, Japan, an MSc in Environmental Engineering from the University of the Philippines Diliman, and an engineering degree in Food Technology and Chemical Engineering from the Institute of Technology of Cambodia. With over 15 years of experience in academia and environmental research, her expertise spans environmental and social safeguards, EIA, climate change, risk and vulnerability assessment, WASH, smart cities, sustainable development, and public health. She has collaborated with Cambodian government agencies and international organisations, including UNICEF, UN-Habitat, UNESCO, GEF, and GIZ, and serves as a volunteer board member of the Center for Sustainable Water.