Witoon Tawisook is a civil engineer with extensive experience in land transport, especially roads, bridges, and tunnels. He is the team leader for the Timor-Leste transport portfolio and the Bataan–Cavite Interlink Bridge Project in the Philippines. He joined ADB in 2008 and has worked on transport projects in South Asia and Central and West Asia, including India, Bangladesh, Nepal, Afghanistan, Uzbekistan, and Georgia. Previously, he worked on major infrastructure projects in Viet Nam, Thailand, India, and Tajikistan.