[1] Harith start beginning of his career football with been spotted by the NFDP officials while he was playing for his school's under-12 before joining the Mokhtar Dahari Academy (AMD).
He was a striker at the beginning of his football journey, but his talent in handling the defense line as a central defender started with the AMD team and shines in that position up until now.
[2] On 31 July 2021, Harith made his debut for the first team in the 2021 Malaysia Super League matches against Penang; which he came on as substitute.
[4] He was later selected for the national under-23 team for the 2022 AFC U-23 Asian Cup qualification, helping the squad to reach the final tournament.
[5] In March 2024, Harith was called up to the Malaysia national team for their 2026 FIFA World Cup qualification matches.