From 1975 to 1978, he was a Research Scholar at I.I.T. Madras and was partly
responsible for setting up the Microelectronics Device Laboratory.
From 1978 to 1984, he was a Project Associate at I.I.T Madras, where he was
responsible for the development of ultrasensitive photo p-i-n
diodes for UV, Visible and IR radiation, as well as lifetime control using
Platinum for high speed switching devices. Since 1985 he has been with
University of Waterloo, first as a Postdoctoral Fellow and later as
Professor, in the Department of Electrical and Computer Engineering.
For ten years (1996-2005) he had served as the Director of
Waterloo Centre for Materials Technology
(WATMAT) which had 38 Faculty members as its members.
Professor Selvakumar was a Visiting Fellow at Princeton University (2003)
and a Visiting Faculty Member (1992) of Stanford
University's Department of Electrical Engineering. He received Marsland Fellowship Award in Information Technology in 2003. He was a member of the Board of Governors of the University of Waterloo and a member of the University of Waterloo Senate for three years (2006-2009).
His current research interests are in the semiconductor devices and its technology.
His interests had spanned bipolar transistors, SiGe channel MOSFET's, solar cells, photodetectors, novel group IV binary and ternary alloy
devices and quantum effect devices. In the recent past his interests were in percolation modeling of gate insulator breakdowns and high-K dielectricss. He served as Technical Program Committee
Chairperson of the 1994 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.
He served as a Chairman of the Kitchener-Waterloo IEEE Section Electron Devices,
Circuits and Systems Chapter.
He is cited in American Men and
Women of Science 1992 edition.