A regular performer as part of the Bengali theatre group Swapnasandhani, Riddhi Sen is a movie actor who predominantly works in Bengali cinema. Son of actor Kaushik Sen and grandson of actress Chitra Sen, he has performed several stage plays titled Prachya, Dakghor, Banku Babur Bandhu, Bhalo Rakkhosher Golpo, and Birpurush. He has also worked in several movies like Dushman No. 1, directed by Suman Mukhopadhyay, followed by Iti `Mrinalini`, Open Tee Bioscope, Chirodini Tumi Je Amar 2, Chauranga, and Lion. He also featured in the popular Bollywood flm Kahaani (2012), in which he played the role of a tea vendor Poltu. His 2017 venture includes the action thriller film Bhoomi, directed by Omung Kumar, which is a revenge story starring Sanjay Dutt and Aditi Rao Hydari in the lead roles. His 2018 release includes Helicopter Eela, directed by Pradeep Sarkar. His 2019 release includes Nagarkirtan.