The all-rounder will be backed by Booragoon business Blitz Sportsgoods, which will provide him with equipment from Indian cricket brand Ranson for the next two years.
Ranson is venturing into the Australian cricket market place for the first time this season.
Blitz owner Russell Dower said the company was looking to help with Hinchliffe’s development.
‘We decided to approach and ultimately sign Clint with a Ranson sponsorship contract not only for his undoubted ability, but also because of his character, level-headed nature and credibility as a person who is dedicated and hard working,’ he said.
Hinchliffe said he was ‘stoked’ to have been selected for the national side, which tours Sri Lanka later this month.
He was the youngest player in Joondalup’s WACA first grade line-up, where he played a full season in 2013-14. The teenager made 351 runs in 13 matches.
The left-hander has also emerged as a handy chinaman bowler, which earned him a spot at the National Spin Camp in May working with Brad Hogg and Nathan Lyon. The former medium paceman switched to spin after injuring his back.
‘It’s something new, I try to challenge myself,’ Hinchliffe said.
He’s confident he’ll hold his spot in Joondalup’s top team for the 2014-15 competition and aims to work his way up the batting order.
‘I should be in the side again this year,’ he said. ‘I think I’m starting at five, but I hope I can end up batting at three; that’s where I want to bat.’
The Australian under-19s travel to Sri Lanka for five one-day matches and a three-day match between September 25 and October 9.