S. A. Abdullah Al Mamun is a development professional with 24 years of experience working with the Asian Development Bank, Agence Française de Développement, UNICEF, and Practical Action Across South Asia. He brings strong expertise in project and portfolio management, partnerships, and policy and knowledge sharing. His core areas of work include water supply and sanitation, climate resilient and low carbon urban infrastructure, renewable energy, municipal finance, governance, and community led development.