Mr.Orogun trained with D.O.Dafinone & Co Chartered Accountants. He studied with Chart Fulks Lynch London, for his professional studies and qualified in May 1988 as a member of the institute of Chartered Accountant of Nigeria . He has been exposed to various aspects of professional practice. Between 1979 and 2009, he has acquired 30 years of professional experience covering Accountancy, Auditing, Taxation, Consultancy and Financial Advisory services, within the Nigerian economy. He was among those that packaged and implemented the Nigerian debt/Equity conversion scheme. He has been involved in some specialised staff training programme for Lagos State Government.