Vaishnav competed in Surya TV's Surya Singer 2, a Malayalam music reality show in 2014, where he emerged as the winner. In 2015, his participation in the second edition of Indian reality television singing competition Indian Idol Junior, earned him recognition. Universal Music India (UMI) signed a two-year record deal with him before he finished the competition as the third runner-up. After Vaishnav's audition for the sixth season of Sa Re Ga Ma Pa Li'l Champs, singing "Bin Tere", went viral online in July 2017, he was featured in Indian Express,Times of India, Mathrubhumi among others, bringing him wider fame in India. He received praise from the judges and audiences alike for the performance and finished runner-up of the competition. In 2018, Vaishnav made his debut as a playback singer with the Malayalam film, "Ankarajyathe Jimmanmar", composed by Girish Nayanan.