Along with this appointment, he also served as adjunct professor of Electrical Engineering at University of Southern California from 1982 till 1987.

In 1985, he was appointed as a Chair of Electrical and Computer Engineering Department at California State Polytechnic University.

During the 1980s, he held appointment as Vice President of New Bedford Panaromex Corporation, and was also involved in the Space Shuttle project, and designing microprocessor-based Airport Remote Maintenance system for Federal Aviation Administration (FAA).

[citation needed] In his book entitled Preparing for an Outstanding Career in Computers, Rafiquzzaman has focused on the principles and basic tools to design typical digital systems such as microcomputers.

[6] Rafiquzzaman authored Fundamentals of Digital Logic and Microcontrollers in 2014, which focuses on basic concepts regarding CPLDs and FPGAs.