After graduating from Emory University with a B.A. in International Relations and Japanese, Nnenna moved to Japan to attain fluency in Japanese and pursue her interests in economic development. During her three year residency, she participated in several research programs including the United Nations Sustainability Initiative in Tokyo. Nnenna returned to the U.S. and worked as a corporate tax accountant before enrolling in business school. At Stern Nnenna is the Co-president of Stern in Africa and also serves on the board of the Emerging Markets Association.