Sadun has over 30 years of experience with local authorities. He assumed a managerial position in the Middle East section of United Cities & Local Governments (UCLG-MEWA). As the National Coordinator of the Turkey Local Agenda 21 Program, he paved the way for the establishment of citizens’ assemblies as a new local governance mechanism. His project links with the World Bank, UNDP and OSCE has continued under the umbrella of VNG International, serving as the Team Leader in EU-funded projects on improving local governance and participation. He currently serves as the Team Leader in the project on town twinning between Turkey and the EU.