Motsomi joined BOB in 1983 and went through different positions.
He held ranks in departments in the Monetary and Financial Stability Department to head the Research Department.
He was responsible for among others formulation and implementation of monetary policy and implementation of the exchange rate policy. He was also responsible for regulation and supervision of banks.
He was also under the special appointee program under the International Monetary Fund. Motsomi has a Bachelor’s degree in Economics and Accounting from the University of Botswana in 1983.
He also holds a diploma in Economic Development and Planning from the African Institute for Economic Development and Planning in Dakar Senegal in 1987.
Masters degree in Economics from the Victoria University of Manchester in 1990, he also has took an executive management and development study program at the University of Stellenbosch Business School.