Shri Rajarshi Nandy is a well-known spiritual upasaka, mentor and author who promotes Hindu Tantrika and Sakta traditions among the masses. A devoted follower of Bhagavan Bhairava and various forms of the Mahavidyas like Kamakhya and Tara, his podcasts and public interviews have inspired countless individuals to take up devata upasana, as guided by him and his organization-the Kamakhya Bhairava Upasaka Foundation (KBUF). Born in Kolkata, he completed his engineering education in Bengaluru and worked in the corporate sector for several years, while continuing his deep spiritual inquiry. Eventually, he took up a full-time role in guiding upasakas and working toward the revival and protection of Dharma through spiritual means.