Distinguished Scientist & Director General, Defence Research and Development Organisation (DRDO) (Retd.), New Delhi
Executive Director, Society for Electronic Transactions and Security (SETS), Chennai
Adviser/ Scientist 'G', Office of the Principal Scientific Adviser to the Gol, New Delhi
Indian Statistical Institute (ISI), Kolkata
Scientific Analysis Group, Defence Research and Development Organisation (DRDO), New Delhi
Quantum Security, Professor, Physical Research Laboratory, Ahmedabad
Distinguished Scientist (ICTG), Council of Scientific and Industrial Research (CSIR), New Delhi
Director (R&D), Bharat Electronics Ltd (BEL), Bangalore
Director, National Security Council Secretariat (NSCS), New Delhi
Senior Scientist, Society for Electronic Transactions and Security (SETS), Chennai