after completing his graduation simerjit moved to mumbai in 1997 to pursue his passion of films. he started his career as an assistant director to director anees bazmee for his second directorial venture, pyaar to hona hi tha (1998), after that he joined to anil devgan for raju chacha (2000) & blackmail (2005), he also assisted to rohit shetty for his directorial debut film, zameen (2003). while doing blackmail he gets a chance to work as a chief assistant director for his first punjabi film (2006) directed by manoj punj. this film was his last film as an assistant.