Previously Rajeev was a Bell Labs Fellow and the founding Director of the Bell Labs Research Center in Bangalore, India. Rajeev worked at Bell Labs from 1993 until 2008. During the period, he led a number of research projects that were incorporated into Lucent products and services. These include the Datablitz main-memory database system, the Fellini multimedia storage server, and the NetInventory auto-discovery engine. His research interests include database systems, data mining, and network management. His most recent research has focused on the areas of network monitoring and security, network graph compression and analysis, and video content dissemination.

Rajeev is active in the fields of databases, data mining, and networking, and has served on the program committees of several conferences in these areas. He currently serves on the editorial board of the CACM, and has been an Associate editor for IEEE Transactions on Knowledge and Data Engineering in the past. He has published over 125 papers, and filed over 70 patents of which 40 have been issued. Rajeev received his B. Tech degree from IIT Bombay, and a PhD degree in Computer Science from the University of Texas, Austin.