Maimuna is the Executive Director, Retail Banking. In this position, she oversees Mortgage, Commercial, Retail and Consumer Banking activities of the bank.

Prior to joining ASO Savings and Loans Plc in April 2009, Maimuna was the MD/CEO Maison Belle Global Services and Maison Belle Interiors Nigeria Limited. With more than 15 years professional work experience; she was the Zonal Head, North of the First City Monument Bank (FCMB) responsible for branch expansion across the Northern states of Nigeria and ensuring that set targets are met. She was also the Head of Public Sector in Abuja and the North and was responsible for Quality Risk Asset Creation in FCMB. In the course of her banking career, she served as the Zonal Director North of Continental Trust Bank Ltd.

A graduate of University of Maiduguri, Maimuna earned a bachelor's degree in Accounting. She also holds an MBA Finance from the University of Maiduguri. She is a member of several professional bodies, notable amongst which are the Institute of Certified Public Accountants of Nigeria, Institute of Industrial and Corporate Administration and the Nigerian Institute of Management.