Alieu Nyei is an economist and public finance specialist with over 15 years of experience in macroeconomic management, the energy sector, regulatory economics and public financial management reform. He has served in several roles at the Ministry of Finance and Development Planning, including Assistant Minister for Fiscal Affairs, and was competitively recruited under Liberia's first Millennium Challenge Compact to lead Regulatory Economics at the Liberia Electricity Regulatory Commission.

He has consulted for the Collaborative Africa Budget Reform Initiative (CABRI), coaching reform teams in the Ministries of Finance of Liberia, Sierra Leone and The Gambia using the Problem-Driven Iterative Adaptation approach. Since 2023 he has been a member of the International Advisory Group on Public Finance established by ODI Global.

He holds an MPA in Economic Policy Management, specialising in Energy and Environment, from Columbia University's School of International and Public Affairs, and an MSc in International Finance and Economic Development from the University of Reading. He has completed advanced training in financial modelling, utility regulation, public financial management, leadership and macroeconomic policy through institutions including Harvard Kennedy School, the London School of Economics, the Public Utility Research Center at the University of Florida, the Florence School of Regulation and the IMF Institute.