The youngster, who becomes the first Hyderabad-based player to sign on professional terms with HFC, started off with Senrab FC (London) in 2014.
The youngster joins Hyderabad as the fourth new overseas player after Bartholomew Ogbeche, Edu Garcia and Juanan.
The 23-year-old has been a part of Hyderabad FC since its inception and spent the last season on loan with Real Kashmir.
Pritam becomes the ninth new arrival at Hyderabad FC this season, and the sixth domestic player to join the club.