Professor Wajidi has been an Acting Vice-Chancellor, University of Karachi. He has held several other positions which include: Dean Faculty of Commerce & Business Administration, Dean Faculty of Arts, Dean Faculty of Education & Chairman Department of Public Administration, at the University of Karachi. He has a teaching experience of 38 years and has produced 30 PhDs and 3 M.Phil.s.

Professor Wajid is a Fellow, Institute of Chartered Managers, Pakistan, Fellow, Royal Society of Medicine, and his name has been inscribed on the Wall of Honour, Royal Society of Medicine, London, UK. He is President, Pakistan Chapter, Association on Employment Principles and Practices (AEPP), New York, US. He is also a Member, Journal of the Council of Employees Responsibilities and Right (CERR), AEPP, New York, US.

Professor Wajidi is, at present, a Professor of Public Administration at the University of Karachi. He specializes in the areas of Human Resource Management, Strategic Management, Personnel Management, Comparative Public Administration, and International HRM.