Arjun Nandakumar started his career in films through the romantic action thriller Casanovva (2012) directed by Rosshan Andrrews, starring Mohanlal. He played a supporting role, Kiran. Arjun most noted films are Grandmaster (film) (2012), Radio Jockey, 8:20, Medulla Oblongata (film), Dolphins, Jamna Pyari Su.. Su... Sudhi Vathmeekam. His upcoming films are Oppam (2016), Ore Mugham, and Marupadi.