Engr. J. O. Oyetoso was born on 10th October, 1954. He attended Fiditi Grammar School between 1969 and 1974 where he obtained West African School Certificate Division III, Methodist Boys High School (Evening Class) Lagos where he obtained West African School Certificate Division II. He later proceeded to Technical College of Mechanical Engineering Technology, Plovdiv, Bulgaria Eastern Europe between 1978 and 1981. For Post Graduate Diploma in Technical Education, he attended University of Benin, Benin City (1989-1991), Federal University of Technology, Akure (1996-1998) for Post Graduate Diploma in Mechanical Engineering, Lead City University of Master of Science (M.Sc) Computer and Information Science.
He started working when he worked as Pupil Engineer at Ministry of Works (Mechanical Engineering Section) Plateau State between 1982 and 1989. He was the Vice Principal (Special Duties) at St. Bernadine's Grammar School, Oyo.
He joined the services of The Polytechnic, Ibadan in 1999. Since he joined The Polytechnic, he has been Head of Mechanical Engineering Unit, Eruwa Campus between 1999 and 2006. He was the Executive Hall Warden, Orisun Hall of Residence, The Polytechnic, Ibadan between 2007 and 2010.
He is a member of Council for the regulation of Engineering in Nigeria (COREN REGD), Member, Nigeria Society of Engineers (MNSE), and Member, Nigerian Institute of Mechanical Engineers (MNIME)
He has presented papers at seminars and conferences. He has many publications to his credit.
He is happily married and the marriage is blessed with thriving children.