[2][3][4][5] While working as a dance choreographer, Ajay made his acting debut with Agathiyan's Selvam (2005) portraying a friend of the lead character played by Nandha.
His friendship with Venkat Prabhu meant that he was cast in Chennai 600028 (2007) portraying an ambulance driver, who plays gully cricket for the Sharks team.
Ajay Raaj also had a supporting role in Thiagarajan Kumararaja's neo-noir Aaranya Kaandam (2010), portraying a henchman of the gangster played by Jackie Shroff.
[6][7][8] Ajay Raj worked as a choreagrapher in the films such as Kadhal Mannan (1998), Amarkalam (1999), Parthen Rasithen (2000), Thamizh (2002), Sukran (2005), Selvam (2005), Chennai 600028 (2007), Goa (2010), Mankatha (2011), Biriyani (2013), Massu Engira Masilamani (2015), Chennai 600028 II: Second Innings (2016) and Party (2018).
Ajay Raj played as supporting role in thrillers films The Greatest of All Time (2024) and Sattam En Kaiyil (2024).