Muhumuza holds a PhD (Development Economics) from the University of Manchester, a Masters in Economic Policy and Planning from Makerere University, and A Certificate in Development Evaluation by Carleton University and World Bank.

Muhumuza is a Senior Lecturer at the Makerere University Business School (MUBS) and the Director of the MUBS Economic Forum. He has experience of 30 years in development policy research and analysis. He has worked as Economic Advisor at the Ministry of Finance Planning and Economic Development in Uganda. He has taught at: Makerere University – School of Economics, Kyambogo University, Nkumba University and African Bible University.

He conducts policy and institutional analysis, strategic planning, and training for the Public and private sectors, Civil Society, and Development Partners.

Muhumuza is the Chair of the Board of Vision Fund Uganda; and a Member of the Boards of Habitat for Humanity Uganda, the African Forum and Network on Debt and Development (AFRODAD) based in Harare, and the International Centre for Research on Women (ICRW).

He has previously served on the Boards of Bank of Baroda Uganda (Chair); World Vision Uganda (Chair), Scripture Union of Uganda, Uganda Christian University Council, Bank of India Uganda and Post Bank Uganda Limited.