1. May 16, 2011 onwards
Professor IT and Dean R&D, M A M College of Engineering, Trichy, Tamilnadu, India
2.January 2003 onwards
Manager, Mohi-Al-Deen Technologies, LLC, Washington, DC, USA
3. September 2000 – January 2003
Associate Professor, School of Computer Science, Framingham State College, MA, USA
4. August 2000 – September 2000
Consultant on CSAB Accreditation Planning, Framingham State College, MA, USA
5. March 2000 to July 2000
Professor and Chair, Department of Information Technology, Crescent Engineering College, Madras, India.
6. February 1996 to February 2000
Professor, Department of Computer Science, Engineering and Applications, Crescent Engineering College, Madras, India.
7. May 1995 to February 1996
Professor and Chair, Department of Electronics and Communication Engineering, Crescent Engineering College, Madras, India
8. September 1993 to May 1995
Professor, Department of Computer Science and Engineering, Crescent Engineering College, Madras, India
9. September 1991 to September 1993
Professor and Chair, Department of Computer Science and Engineering, Crescent Engineering College, Madras, India
10. October 1984 to August 1991
Assistant Professor, Department of Computer Engineering, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia,
11. January 1984 to October 1984
Professor, Department of Computer Science and Engineering, Indian Institute of Technology (IIT), New Delhi, India (First to be promoted without attending the interview in person in IIT New Delhi.)
12. June 1982 to January 1984
Assistant Professor, Department of Computer Science and Engineering, Indian Institute of Technology (IIT), New Delhi, India
13. January 1975 to June 1982
Assistant Professor, Computer Technology Group, Department of Electrical Engineering, Indian Institute of Technology (IIT), New Delhi, India.
14. September 1972 to January 1975
Lecturer, Computer Centre, Indian Institute of Technology, New Delhi, India
15. September 1970 to September 1972
Senior Research Assistant, Computer Centre, Indian Institute of Technology (IIT), Kanpur, India.
16. July 1969 to September 1970
Junior Research Assistant, Computer Centre, Indian Institute of Technology (IIT), Kanpur, India.
17. January 1969 to July 1969
Junior Research Assistant, Department of Electrical Engineering, Indian Institute of Technology (IIT), Kanpur, India.