Invited to become a member of the International Advisory Committee of the 15th International Workshop on Neutrino-Nucleus Interaction to be held in Mainz, Germany during 6-11 October 2025.

Invited to become a member of "Particle Physics Group and the European Strategy Group" to draft the European Particle Physics Strategy 2026.

Invited member of the "Nuclear Physics European Collaboration Committee," contributing to the "Long Range Plan for Nuclear Physics in Europe".

Invited member of the Snowmass Collaboration on Neutrino Physics contributing to the "Long Range Plan for Neutrino Physics in the United States".

Member of the NuSTEC(Neutrino Scattering Theory-Experimental Collaboration) Board, an Inter- national Collaboration of about 40 scientists(only one from Indian subcontinent). https://nustec.fnal.gov/.

Member of the Expert Panel of the "Indian Mega Science Vision(MSV)-2035 Report in Nuclear Physics" nominated by the Principle Scientific Advisor to the Govt. of India for finalising the MSV-2035 (Nuclear Physics) Draft Report.

Member, Neutrino Panel of International Union of Pure and Applied Physics(IUPAP) (only one from the Indian subcontinent). The term of the appointment was of three years 2019-22. This panel, which included a Nobel laureate, Directors of institutes/laboratories was to promote international cooperation in the development of neutrino physics and we published "Neutrino-Panel IUPAP White Paper Report," in Progress in Particle and Nuclear Physics 124 (2022) 103947. It has received more than 100 citations. https://www.iupapneutrinopanel.org/

Member Neutrino Scattering Theory Experiment Collaboration (NuSTEC). https://nustec.fnal.gov/

Member MINERvA Collaboration, Fermilab, USA. https://minerva.fnal.gov/

Invited by the Editor-in-Chief of the Progress in Particle and Nuclear Physics (Impact Factor 17.9, Elsevier), the highest impact journal in the combined field of Nuclear and Particle Physics to write a review article on the “Neutrino and their interactions with matter”. The article is now published: Prog. Part. Nucl. Phys. 129 (2023) 104019, 185 Print Pages. It has received more than 50 citations in 2 years.

For the past 14 years, I have had the privilege of working with 2015 Nobel Laureate in Physics, Prof. Takaaki Kajita. This collaboration began when he invited me to be a Visiting Professor at the University of Tokyo to assist experimentalists in understanding Neutrino Interactions and theoretically predict atmospheric neutrino flux. Together, we have co-authored several papers on atmospheric neutrinos. I have made three visits to the University of Tokyo since 2008.

Edited on volume on Neutrino Interactions in the Intermediate and High Energy Region (Springer).

Member, DUNE Collaboration, USA.

Member, Scientific Management Board of INO, DAE-DST Nominated Commottee, Govt. of India.

Review Editor on the Editorial Board of High-Energy and Astroparticle Physics.

Member, Department of Atomic Energy (DAE) Committee to monitor Indian contribution towards India-DUNE Collaboration.