[2] Within a few years, he had made the Queensland side and was invited to play for the world XVIII at the under-16 championships in Sydney.

[5] After being overlooked in the 2012 AFL draft, Aliir made the decision to relocate to Perth to live with his family.

He suffered a dislocated shoulder mid-season, and was ruled out for the remainder of the year in round 16, which resulted in him missing the team's 2014 NEAFL finals campaign.

However, in the preliminary final, Aliir suffered a low-grade medial strain late in the first quarter of their win over Geelong.

[14] In Round 4 of the 2023 AFL season, Aliir saved the game for Port Adelaide against his former team, Sydney, by spoiling a shot after the siren from Oliver Florent that was going in.

Notes Aliir's younger half-brother, Akech, plays for Melbourne United in the National Basketball League.