After doing several Bengali films including Tears of Nandigram and Trayadashi, she shifted to Mumbai.
She did several advertisements including Cadbury Celebration, Sony Mix Channel, Bharat Nirman, Yebhi.com, and 7Up.
In 2011, Ronjini was shortlisted for a Colors TV daily soap, “Na Bole Tum Na Maine Kuch Kaha,” but she couldn't be a part of the show as she got an offer for a movie, From Sydney with Love at the same time.
In 2013, she made her appearance in a sitcom of Channel V named Paanch 5 Wrongs Make A Right She has also appeared in short films such as ‘A Perfect Day’ by Abhinandan Gupta (2011), ‘Just Friends’ by Arun Sukumar (2013), and ‘Blouse’ by Vijayeta Kumar (2014).
She has acted in many Hindi TV series, including ‘Man's World’ (2015), Stories by Rabindranath Tagore (2015), ‘Not Out’ (2016), ‘PA Gals’ (2017), ‘Lalbazaar’ (2020), Raktanchal (2020).