Roja began her acting career in the early 1990s, making her debut in the Tamil film "Pallu Padama Paathuka" (1994). Her breakthrough role came with the film "Raagavai" (1995), which earned her recognition and acclaim. Throughout the 1990s and 2000s, Roja appeared in a string of successful films, including "Gnanapazham" (1996), "Pudhu Varrasu" (1997), and "Thirumalai" (2003).