[1][2] She is one of the founders of Kolkata based production company Magic Moments Motion Pictures along with Saibal Banerjee.
She is also a Director, Script and Story writer in Organinc Studios, owned by her son Arka Ganguly.
'Sreemoyee' written by Gangopadhyay was made in Hindi (as Anupama), Kannada (as Inthi Nimma Asha), Marathi (as Aai Kuthe Kay Karte), Malayalam (as Kudumbavilakku), Telugu (as Intinti Gruhalakshmi), Tamil (as Baakiyalakshmi).
Yet another serial written by Leena Gangopadhyay 'Mohor' was remade in Kannada as 'Sarasu', Hindi as 'Shaurya Aur Anokhi Ki Kahani', Malayalam as ‘Koodevide', Marathi as ‘Swabhiman – Shodh Astitvacha’, Tamil as 'Kaatrukkenna Veli’ and Telugu as 'Guppedantha Manasu'.
She has been criticised and trolled on social media for writing stories that are regressive, called to end a few of the serials with reasons cited including lack of originality in storyline, repetitiveness in plot, the negative influence on society like the serial Guddi[7] and lack of sensitivity in portrayal of a community or people like Ishti Kutum.