Arnab is a researcher, maritime strategist, and entrepreneur. He is the Founder & Director of the Maritime Research Centre (MRC) under the Foundation for Underwater Domain Awareness (FUDA), Pune, which is working on a unique concept of Underwater Domain Awareness (UDA) as its main focus. He also runs his Start-up, M/S NirDhwani Technology Pvt Ltd which provides consultancies and services for high-end maritime security solutions and marine conservation support. He advises start-ups on underwater technology solutions and defence strategies. He has over 100 publications, a book, and two book chapters to his credit.

Arnab was commissioned as an electrical officer in 1994. He was deputed to IIT Delhi in 2001 for his Master’s in Underwater Electronics and subsequently appointed as the Project Officer at IIT Delhi to manage the Navy’s Underwater R&D. He delivered multiple technology transfers, including for the strategic submarine project related to underwater systems and algorithms. He also completed his PhD from IIT Delhi in 2007 in underwater signal processing.

He was invited to Tokyo University in 2014 as a visiting researcher to participate in the design and development of passive acoustic monitoring systems for freshwater dolphins.  He was also at the Acoustic Research Laboratory of the Tropical Marine Science Institute at the National University of Singapore in 2015 for a year, post his retirement from the Navy to understand underwater technology development from a global perspective.