Selvaraj is at the helm of research and technology development affairs for sustainable energy solutions, including hydrogen economy. Green hydrogen generation for climate change mitigation is the current thrust area of interest. He leads a program to develop India's first Indigenous AEM Water Electrolyser Technology under the National Green Hydrogen Mission(NHEM). He is a materials scientist with a physical and inorganic chemistry background by training. He has more than 25 years of research experience and has mentored several post-doctoral, PhD, and graduate students. He has about 70 international publications and over ten patents (PCTs) to his credit. He has delivered more than 60 invited talks in prestigious institutions.