Ambarish forayed into Bengali television with his debut fiction comedy series Raja & Gaja.

He has already worked with directors like Kaushik Ganguly, Anjan Dutt, Srijit Mukherji, Kamaleswar Mukherjee, and others.

Open Tee Bioscope by Anindya Chattopadhyay, Bibaho Obhijaan by Birsa Dasgupta and Gotro by Sibaprasad Mukherji and Nandita Roy are some of works with major roles.

He was closely involved in performing theatre songs along with veteran thespian and singer Ketaki Dutta.

He has also worked in Jatra (theatre) with the famous female impersonator Chapal Bhaduri in Shitala from 2000 to 2006[citation needed].