Rajakumar debuted in Balaji Tharaneetharan's critically acclaimed Naduvula Konjam Pakkatha Kaanom (2012), Rajakumar has since appeared in pivotal roles in films including Naveena Saraswathi Sabatham (2013) and Naalu Policeum Nalla Irundha Oorum (2015).
[1][2] Rajakumar began his career with Balaji Tharaneetharan's critically acclaimed Naduvula Konjam Pakkatha Kaanom (2012), portraying Balaji in a film inspired by real life events.
[4][5] In 2013, Rajakumar appeared in the fantasy comedy Naveena Saraswathi Sabatham, portraying one of four trapped youngsters.
The film opened to mixed reviews and had an average run at the box office.
He reunited with Balaji Tharaneetharan and the cast of Nadavula Konjam Pakkatha Kaanom in Seethakaathi (2018).