He is responsible for analyzing and forecasting economic developments in Côte d'Ivoire, Senegal, Mali, Guinea, Guinea-Bissau, Liberia, Sierra Leone, Gambia, and Cape Verde. Mr. Casteleijn was a senior economist in the Monetary Policy Research Division of the South African Reserve Bank (1987‒2013) and a national accounts economist at Statistics South Africa. He earned a bachelor of commerce degree (Honors) from the University of Pretoria.