2016 Fuimaono was signed by the
Parramatta Eels, playing for their
S. G. Ball Cup and
National Youth Competition teams. He was named on the interchange bench in the 2016 NYC team of the year.
2017 Fuimaono joined
South Sydney in 2017. Before making his
NRL Debut, Fuimaono played the first half of the 2017 season in the
NSW Cup with the
North Sydney Bears and made a total of 8 appearances. Fuimaono made his NRL debut for Souths in their match against the
Wests Tigers on 12 May. Fuimaono finished the season playing 15 games without missing a match since his debut, scoring 2 tries.
2018 Fuimaono only made 5 appearances for Souths as the player struggled with injuries and did not feature in Souths finals campaign.
2019 In 2019, Fuimaono signed a contract to join the
Penrith Panthers after being released by South Sydney at the end of 2018. Fuimaono made his debut for Penrith against Parramatta in round 1 of the
2019 NRL season which ended in a 20–12 loss. On 16 September 2019, Fuimaono was one of ten players named who were being released by the Penrith club at the end of the
2019 NRL season.
2020 On 7 January 2020, Fuimaono signed a two-year deal for
St. George Illawarra which be applicable for the 2020 and 2021 seasons. In round 11 of the
2020 NRL season, he scored his first try for St. George Illawarra in a 28–24 loss to rivals
Cronulla-Sutherland at
Kogarah Oval. Fuimaono played 17 games for St. George Illawarra in the
2020 NRL season as the club finished 13th on the table and missed out on the finals.
2021 In round 10 of the
2021 NRL season, Fuimaono was sent off in the club's 44–18 loss against Melbourne after a high tackle on Melbourne's
Ryan Papenhuyzen. On 17 May 2021, Fuimaono was suspended for five matches by the NRL judiciary for his tackle on Papenhuyzen. He played a total of 17 matches for
St. George Illawarra in the
2021 NRL season as the club finished 11th on the table and missed out on the finals.
2022 On 20 February during St. George Illawarra's first pre-season trial match, Fuimaono was placed on report and sent to the sin-bin for a hip-drop tackle on Parramatta's
Haze Dunster which ruled the player out of the entire
2022 NRL season. Fuimaono was subsequently suspended for five matches with an early guilty plea to a grade 3 dangerous contact charge. == Post NRL ==