Rajakumaran has worked as an Assistant for director Vikraman. Rajakumaran earlier directed Nee Varuvai Ena with Parthiban and Devayani in the lead roles. Then he directed Vinnukkum Mannukkum. And he married actress Devayani as she fell in love with him. Rajakumaran was last seen directing Thirumathi Thamizh. He also did lead hero in the movie. The movie was a failure. In spite of his failures, he stayed away from the cine industry for few years. Recently he acted in a small comedy role in Santhanam's Vallavanukku Pullum Aayudham.