He is an alumnus of the Polytechnic of North London (now the University of North London) and Enugu State University of Science and Technology, where he obtained his Higher National Diploma in Accounting and Finance, Postgraduate Diploma in Economics, and MBA in Banking and Finance, respectively. In 1988, he obtained the prestigious authorized Clerkship Certificate of The Nigerian Stock Exchange. He is a Fellow of the Chartered Institute of Stockbrokers (FCS).

Before this, he worked for four (4) years in the United Kingdom at various senior management positions with UNWINS Limited, a multinational wine marketing company. He joined the services of Newdevco Finance Services Company Limited (NEWDEVCO) a subsidiary of New Africa Merchant Bank Limited in 1986, and later became the General Manager/Chief Executive.

He was also the Head of the Corporate Banking division of the bank, the position he held before joining the services of Heartbeat Investments Limited in 1997. Mr. Imasuen seats on the board of Sigma Pensions Limited (PFA) and he is the chairman of the Investments Strategy Committee of the Board.