Gangjee turned professional in 2001 by finishing as a runner up in the PGA of India Tour qualifying school.

[2] The event featured many notable names including Ian Woosnam, Nick Faldo, Phillip Price, Jeev Milkha Singh, Des Terblanche and Zhang Lianwei.

Gangjee would continue playing full-time on the Asian Tour, not picking up another tournament win between 2004 and 2008.

He did however pick up a win in June 2008 at the PGTI Players Championship on the Professional Golf Tour of India in his hometown of Calcutta by a margin of five strokes.

Gangjee's next significant win came in April 2018 in Japan when he won the Panasonic Open Golf Championship.

He also won the Louis Philippe Cup (an Asian Development Tour) event in the same year.

Rahil was interested in horseback riding, but his father made him give it up because he believed it was too dangerous as it could be too detrimental for his potential career in golf .