Josh Nearney made his Pools debut in September before playing five games for Whitby during a month-long loan spell.
The 20-year-old joined Victoria Park at the age of 16 and signed his first professional contract with the League Two club in the summer of 2014.
BREAKING: Young defender Josh Nearney becomes the latest player to sign a new contract: https://t.co/NgrUcj2Xl3 pic.twitter.com/VdKvaurheB
— Hartlepool United FC (@Official_HUFC) April 18, 2016