Dube is Regional Representative for Southern Africa of the International Livestock Research Institute (ILRI). He joined ILRI in November 2014 from the Agriculture Research Council in South Africa where he was research team manager, Rangelands Management and Forage Program. His research, student supervision and policy inputs focus on rangelands ecology and gender, the dialogue between science, resources users and policy formulators, development of decision support tools and mapping of resources. He is a Trustee, member and former President of the Grassland Society of Southern Africa. He has a PhD in rangeland ecology and management from Texas A&M University.