In 1984 he joined the Faculty of Electrical Engineering, Universiti Teknologi Malaysia as a lecturer in Electrical and Electronic Engineering. He has held various faculty positions including as Head of Department and Chief Editor of the university journal. In 1985, he began his PhD work at the Department of Electronics and Computer Science, University of Southampton, Southampton, U.K. From 1987 to 1989, he continued his research work at the Department of Engineering, Cambridge University, Cambridge, U.K. where he completed his Ph.D. degree in microelectronics.
His main research interest is in the field of microelectronics which includes the Modeling and Simulation of IC Fabrication Process and Modeling of Semiconductor Devices. He has worked for more than 20 years in this research area and has published various articles on the subject. His current research interest is in the emerging area of Nanoelectronics devices focusing on the use of carbon based materials and novel device structure. He is presently with the Universiti Teknologi Malaysia as a Professor and Head of the Computational Nanoelectronics Research Group. Dr. Razali is a member of the IEEE Electron Devices Society (EDS).