Roja entered the cine field from Telugu films. She was first introduced in the Tamil film by director R.K. Selvamani in his film Chembaruthi paired with actor Prasanth. It was a big super hit film and paved the way for her in Tamil cine industry. She became the dream glamour girl of all young and old. She had acted with most of all the actors in the industry. And also under all directors.

Some of her Tamil hits include Chembaruthi, Indu, Suriyan, Veera, Raasaiya, Parambarai, Ayutha Poojai, Sari Gama Pada Ni, Adhiradipadai, Makkal Aatchi, Puthumai Pithan, Kadavul, Mugam, Ooty, Alagarsamy etc. Roja got a good break in the film Unnidathil Ennai Koduthen directed by Vikraman. She performed very well in this film in a character role. Another thing about Roja is, if asked she used to do just dance for only one song for a film. It's in films like Kathal Kavithai, Nenjinilee etc. She has also got some awards from magazines, organisations for her performances in films in Tamil and Telugu. Her latest films are Tirunelveli, Ealaiyin Siripiley, Sandithavelay.