Mrs. Okoli commenced her banking career as an Executive Trainee in the Operations Unit of Diamond Bank Plc in April 1992 and served in various capacities in the bank until her appointment as an Executive Director in Diamond Bank in September 2016.

She joined the Board of Access Bank Plc in March 2019 following the merger with the former Diamond Bank.

She is a 1989 Law Graduate from the University of Benin and was called to the Nigerian Bar in December 1990. She holds an MBA from Warwick Business School, Coventry, UK. Mrs. Okoli has attended various courses in Nigeria and abroad including the Advanced Management Programme of Wharton Executive Education, University of Pennsylvania, and the Senior Management Programme of the Lagos Business School. She is also an Honorary Member of the Chartered Institute of Bankers of Nigeria.