Dr. Aggarwal has been a faculty member in IT and analytics, senior subject matter expert, lead business analyst, consultant, and research fellow in India and abroad in well-known organizations. He has received awards and fellowships by DAAD, European Commission, Govt. of Canada, Swiss Govt, Irish Research Council, Microsoft Inc. His various articles in IT have appeared in Informs Journal on Computing, IEEE Trans. on Neural Networks, IEEE Trans. on Data and Knowledge Engg., IEEE Trans. on Systems, Man Cybernetics, IEEE Trans. on Fuzzy Systems, International Journal of Machine Learning and Cybernetics, Journal of Multi-Criteria Decision Analysis, Knowledge-based Systems, etc.