Ratemo W. Michieka is the current National Research Fund (NRF) Chairman of the Board of Directors. He was the founding Chairman of the African Scientific Research and Innovation Council (ASRIC), and a Distinguished Professor at Rutgers University, USA, with a speciality in Weed Science and Environment. He was a Postgraduate Research Fellow at the International Institute of Tropical Agriculture (IITA). He is a well-known scholar, having been the founding Vice Chancellor of Jomo Kenyatta University of Agriculture and Technology (JKUAT). He is the Former Chairman of the Kenyatta University Council, Kenya Educational Network (KENET), Kenya Agricultural Research Institute (currently KALRO), Inter-University Council of East Africa (IUCEA), United Nations Framework Convention on Climate Change (UNFCCC).

Ratemo is a Former Director General of Kenya's National Environment Management Authority (NEMA). He was Chair of the African Centre for Technology Studies (ACTS).  Ratemo was a Council member of the Kenya Institute of Management (KIM) and a Board Member of the Kenya Marine and Fisheries Research Institute (KEMFRI). He is currently the Patron of Japan Ex-Participants of Kenya (JEPAK) and Seventh Day Adventist (SDA) students, Upper Kabete Campus, UoN. He was the Founder and Chairman of the African Institute for Capacity Development (AICAD).

Prof. Michieka has published widely in his field of expertise and gives lectures in local and international fora, aiming to promote research, science, technology, innovation, and environmental management. He has also published books and book chapters.