Oladele Akinyemi holds a B.Sc. in Computer Science and an MBA from International Graduate School of Management, IESE University of Navarra, Madrid, Spain. He first joined Diamond Bank from erstwhile Lead Merchant Bank in 1991 as Head of Systems Unit.
He later headed the Commercial/Consumer Banking and the Retail Banking Units of the Bank before leaving for UBA in 1997. He left UBA to become an Executive Director of One-to-One Nigeria Limited and whilst there, he built the first database marketing service company in Nigeria and pioneered List Rental business in Nigeria.
He later joined Citibank Nigeria in 1999 as Head of Cards, Cash Management and e-Solutions Group. He returned to Diamond Bank in 2002 as Head of the Information Technology Group and was appointed an Executive Director in 2006.