Rupak has been President and CEO of the Forum of Federations since 2011. He was a Senior Adviser to the Ethiopian House of Federations on federalism. He was Member of the Consultative Group on the Study of Intergovernmental Relations and Dispute Resolution Mechanisms, Government of India. In 2004/5 he was Advisor to the Chairman of the Observer Research Foundation. He isa Senior Research Fellow at the Centre for Federal Studies at the University of Kent. Over the last two decades he has contributed as an expert in support of policy and constitutional reforms in Brazil, Ethiopia, Mexico, Myanmar, Philippines, Nepal, Sri Lanka, Tunisia, and Yemen. He holds master's degrees in economics and political science from the University of Ottawa and the University of Illinois (Urbana-Champaign) and did his doctoral work in political science at the University of Toronto. Rupak has authored, co-authored, and edited several books and papers on federalism including Unity in Diversity: Learning from Each Other (Viva Books 2008), Finance and Governance of Capital Cities in Federal Systems (McGill Queens UP 2009) and Governance and Finance of Metropolitan Areas in Federal Countries (Oxford UP 2013). Recently he co-authored a comparative study on Apex Level Intergovernmental relations (World Bank 2019). Rupak is a Fellow of Salzburg Global.