Hastings played 47 games, scored 14 tries, kicked 195 goals and 1 field goal for 447 points in his U20s career from 2013 to 2016 with both the St. George Illawarra Dragons and the Sydney Roosters.[7]
On 2 May 2015, Hastings played for the Junior Kangaroos against Junior Kiwis.[14]
On 8 July 2015, Hastings played for the New South Wales Under-20s team against the Queensland Under-20s team.[15]
In 2015, Hastings was a regular in the Sydney Roosters team as they won the Minor Premiership. Hastings played in the clubs preliminary final loss to Brisbane. In 2016, Hastings had an indifferent year at the club as they struggled on the field. This culminated as Hastings was demoted to reserve grade with the Wyong Roos after he had disciplinary problems and also falling out with senior players at the club. In November 2016, Hastings was released from the final year of his contract.[16]
At the start of the 2018 season, Hastings was involved in a well publicised falling out with fellow Manly player Daly Cherry-Evans and coach Trent Barrett. He was banished to reserve grade to play for Blacktown Workers and told he would be moved on by the club.[19][20]
On 26 June 2018, Hastings was released from the remainder of his contract with Manly. The club released a statement saying "Manly Warringah Sea Eagles have today released Jackson Hastings from the remainder of his contract, effective immediately, The Club and Jackson's management have made the decision mutually".[21]
On April 19, 2021, Hastings signed a two-year deal to join NRL side the Wests Tigers starting in 2022.[29]
In round 7 of the 2021 Super League season against Salford, Hastings kicked a field goal to win the match for Wigan 17-16.[30]
Wests Tigers
Wests Tigers signed Hastings on a two-year deal worth about $500,000 a season with a possible upgrade next year. In round 1 of the 2022 NRL season, Hastings made his club debut for the Wests Tigers in their 26-16 loss against Melbourne.[31]
In round 6, Hastings helped the Wests Tigers to their first win of the 2022 season, kicking a 38 metre field goal to break a 20-all deadlock against Parramatta with seconds left remaining in the match.[32]
On 31 July 2022, Hastings was ruled out for the remainder of the 2022 NRL season after suffering a broken ankle in Wests Tigers upset victory over Brisbane.[33] Despite his 16 appearances, he was still second in the NRL in the "line engaged" stat.[34]
The Wests Tigers club would finish the 2022 NRL season on the bottom of the table and claim the Wooden Spoon for the first time.[35]
Newcastle Knights
In November 2022, Hastings was released from the final year of his Wests Tigers contract and signed a three-year deal with the Newcastle Knights.[36]
In round 1 of the 2023 NRL season, Hastings made his club debut for Newcastle in their 20-12 loss against the New Zealand Warriors.[37]
In round 18 of the 2023 NRL season, Hastings scored two tries in Newcastle's 66-0 victory over Canterbury.[38]
Hastings made 22 appearances for Newcastle in the 2023 NRL season as the club finished 5th on the table. Hastings played in the clubs elimination final victory over Canberra but missed the following week against the New Zealand Warriors in which Newcastle's season was ended.[39]
After Newcastle lost the opening two matches of the 2024 NRL season, Hastings was demoted to reserve grade and replaced with Jack Cogger. It was reported that Hastings refused to train with the reserve grade team after being demoted.[40]
On 1 April 2024, Fox Sports commentator Andrew Voss was forced to apologise over a comment he made about Hastings during Newcastle's round 4 match against the New Zealand Warriors. The camera was panning to some of the NSW Cup players from Newcastle who were watching the first grade team play when Voss commented that one of the players was Hastings who appeared to be sleeping on the hill. Hastings took to his twitter account posting "Unsure who is commenting our game but to make a false statement about me sleeping on the hill when I am in the grandstand watching the game is ridiculous but not surprising to go with multiple lies told over the last few weeks". Voss then replied to Hastings saying “Apology to you Jackson. Certainly wasn’t delivered with any critical intent. Mistake made, Hope we are calling you in the top grade against next week v Dragons".[41]
Hastings played 16 matches for Newcastle in the 2024 NRL season as the club finished 8th and qualified for the finals. They were eliminated in the first week of the finals by North Queensland.[42]
