[2][3][4][5] Masi was selected to the national team after his impressive performances at the 2020 Fiji Bitter Marist 7s tournament where he also scored a hat-trick in one of the matches.

[6] Masi made his debut appearance at the Olympic Games in 2020 representing Fiji in the men's rugby sevens tournament.

[7][8] He was part of the Fijian side that won a silver medal at the 2024 Summer Olympics in Paris.

[9][10][11] On 20 September 2021, Masi signed with the Townsville-based North Queensland Cowboys in the National Rugby League (NRL) on a train and replacement contract.

He trained with the Cowboys' NRL squad and played with the Townsville Blackhawks in the Queensland Cup in 2022.