At 10 years of age, the Fifita family settled on the Gold Coast where Sosefo played junior rugby union for the Southport Eagles.
[6] In June 2022, Fifita was selected for the Queensland Maroons U19s, starting at left centre in 32–4 loss to New South Wales Blues U19s.
[7] In round 18 of the 2022 NRL season, Fifita made his first grade debut for the Gold Coast against Brisbane, which the club lost 16–12.
[8] Fifita played a total of 14 matches for the Gold Coast in the 2023 NRL season and scored three tries as the club finished 14th on the table.
[9] Fifita made 19 appearances for the Gold Coast throughout the 2024 NRL season and scored ten tries as the club finished 14th on the table.