Donald Cassell directs the Sagamore Institute's Africa portfolio. Previous to his role at Sagamore, Cassell spent 20 years working as an architect in Indianapolis. He is a member of the American Institute of Architects (AIA) and Construction Specification Institute (CSI).

A native of Liberia, Cassell graduated from Wentworth Institute of Technology in Boston, Mass. Cassell also studied at Reformed Presbyterian Theological Seminary in Pittsburgh, Penn., where he received his master of divinity degree.