Bachelor of Science in Botany, Kenyatta University, Nairobi, Kenya, 1990. Master of Science in Microbiology, Kenyatta University, 2004. Doctor of Philosophy in Microbial Ecology, University Konstanz, Konstanz, Germany, 2000.
Chairman botany department JKUAT, Nairobi, Kenya, 2002—2004, director, institute biotechnology research, 2005, dean, faculty science, 2007, principal, taita taveta campus Voi, Kenya, since 2007. Postdoctoral fellow Max Planck Institute, Marburg, Germany, 2005—2006. Director non-governmental organization Coordination Board, Nairobi, since 2007.
Member of Kenya Society Microbiology (secretary 2002-2008), Kwale Kuu Association 2006-2008, Kenya German Academic Exchange Service Scholars Association (secretary, chairman 2002-2008).
Married Amina Halfan Mtsumi. Children: Sofia Hamadi, Salima Hamadi, Saumu Hamadi.