Hairul returned to Geylang International ahead of the 2019 Singapore Premier League season.
After a decade of being at Geylang, he left the club to ventures for new journey and signed for Balestier Khalsa.
After a year at Balestier, Hairul returned to Geylang International ahead of the 2024–25 Singapore Premier League season.
Hairul was part of the initial Singapore U21 team called up for the 2017 Southeast Asian Games.
[2] In June 2023, Hairul was called up to the senior squad for the first time to face Papua New Guinea and Solomon Island but yet failed to make a single appearances.