Mosun Belo-Olusoga is a Fellow, Institute of Chartered Accountants of Nigeria, Honorary Fellow, Chartered institute of Bankers with diverse experience in the financial industry.

She has worked as Group Head, Corporate Bank (Assistant General Manager), Group Head, Risk Management (Assistant General Manager), Group Head, Transaction Services Group (Deputy General Manager), Group Head, Commercial Bank (General Manager), Group Head, Settlements (General Manager), and Divisional Head (South West Division) at Guaranty Trust Bank Plc. Currently, she is the Principal Consultant at The KRC Limited.

She is a Director at many organizations including FCSL Asset Management Limited, Action Aid, and Premium Pension Limited. She also serves as the Chairman of Access Bank Plc