After the 2008 financial and economic crises, emerging countries channeled their newly found economic resilience into political leverage. Traditional institutions created after World War II, particularly those in the economic and financial spheres, which were no longer representative of the new economic setting, would be questioned by emerging economies. China, India, Brazil, Russia and South Africa (the BRICS) have championed reforms to the institutional structure of the liberal world order, which have not been entirely met. This dissertation aims to shed light on the engagement of emerging countries in world order after the 2008 crisis, particularly in the economic and financial global governance. The main argument is that emerging countries have, since the 2008 crisis, been articulating ways to impact the current liberal world order as captured by the concept of multiplex world, developed by Amitav Acharya (2014, 2017). Along the analyses of the current greater role of developing countries in world order, through a discussion of the new found role of forums such as the G20 and the creation of groups such as the BRICS, the dissertation will focus on two case studies: (i) the creation of the New Development Bank, in 2014 by the Brazil, Russia, India, China and South Africa, and; (ii) the creation of the Asian Infrastructure Investment Bank, in 2015 fostered by China.