Prior to joining ADB in 2007, Hyun was a poverty specialist at the UN Development Program. She also worked for the World Bank in Washington, D.C. and held an academic position at Macquarie University in Sydney, Australia. She has published extensively on poverty, inequality, pro-poor growth, inclusive growth, education and health, and public policies in renowned journals like Economics Letters, Review of Income and Wealth, World Development, Oxford Bulletin of Economics and Statistics, and Journal of Economic Inequality. She was also a guest editor of the special issue on transitional economies for the Journal of Asian Economics. She has written two books, Equity and Well-Being: Measurement and Policy Practice, published in 2011 by Routledge of the Taylor & Francis Group, and Social Welfare Functions and Development: Measurement and Policy Applications, published in 2016 by Palgrave Macmillan.