Mr Akinsanya holds a first degree in Economics from the University of Lagos and an MBA from the Ahmadu Bello University, Zaria, where he graduated at the top of his class in June 1979. He joined the accounting firm of Arthur Andersen & Co. as a trainee accountant after completing his MBA degree. He qualified as a Chartered Accountant with Andersen and is an Associate and Merit Award Winner (1983) of the Institute of Chartered Accountants of Nigeria. He is also an Associate of the Chartered Institute of Stockbrokers of Nigeria and a licensed dealer of The Nigerian Stock Exchange.
He began a career in Merchant and Investment banking with First City Merchant Bank in 1985 and left as General Manager and Head of Corporate Finance in 1993. He was also a Director of City Securities Limited and represented CSL Stockbrokers Limited on the National Council of the Nigerian Stock Exchange between 1985 and 1988.
He is one of the founders of the Nigerian Economic Summit Group and has been actively involved in the processes modernising the securities market and establishing the investment banking profession in Nigeria.