Dr. Aku is the Chairman of the Board of Directors at Marathon Asset and Funds Management Limited. He previously served as the Group Head of Strategy at Ecobank Transnational Incorporated and was formerly the Managing Director/Chief Executive Officer (CEO) of Ecobank Nigeria Limited. His earlier roles include Executive Director at African PLC (now Skye Bank PLC) and Treasurer at Citibank Nigeria Limited. Dr. Aku also served as the Inaugural Group Vice Chairman of the Board of FMDQ Group PLC.
He is the erstwhile President of the Money Market Association of Nigeria (now Financial Markets Dealers Association of Nigeria (FMDA)). He is a member of and represents the FMDA Board of Trustees on the Board of FMDQ Group PLC.