1995 – present: Professor, Department of Civil & Env. Engineering, Florida A&M University-Florida State University College of Engineering, Tallahassee , Florida (tenured).
	1989 - 1995: Associate Professor and Associate Chairman, Department of Civil Engineering, Florida A&M University - Florida State University College of Engineering, Tallahassee, Florida (tenured).
	1984 - 1989: Assistant Professor, Department of Civil Engineering, Florida A&M University - Florida State University College of Engineering, Tallahassee, Florida (tenure track).
	1981 - 1984:  Research Assistant, Department of Civil Engineering, University of Maryland, College Park, Maryland.
	1979 - 1981: Graduate Assistant, Department of Civil Engineering, University of Oklahoma , Norman , Oklahoma .
	1977 - 1979: Lecturer, Department of Civil Engineering, University of Engineering and Technology, Dhaka , Bangladesh .