Nawaqanitawase played schoolboy rugby for St Patrick's College, Strathfield. As an adult, he began his first-class career with Eastwood RFC in the Shute Shield competition. As of 2022, he has been capped 5 times and has scored one try.
With his similarities in height, position, body type, and playing style, Nawaqanitawase has been likened to former Waratahs fullback and dual Australia and Tonga representative Israel Folau.[5][6]
NSW Country
2018 – 19
Nawaqanitawase began his professional career in 2018, signing with the NSW Country Eagles in the National Rugby Championship. He scored his first professional try in a 24–24 draw against the Fijian Drua on 14 September 2019.[7] He scored another three tries in a year which saw the Eagles win the Horan-Little Shield for the first time since 2016.
Following the 2019 season, the NRC competition was disbanded including franchises.
NSW Waratahs
2020 – 22
Nawaqanitawase signed to the Waratahs squad for the 2020 season.[8][9] He made his Super Rugby debut against the Crusaders on 1 February 2020, scoring two tries in a 42–23 loss. He scored another try the following week against the Blues. Nawaqanitawase finished his debut season having played 9 matches and scoring 4 tries.
In 2021, despite a disappointing year for the club, Nawaqanitawase extended his contract with the Waratahs until the end of the 2023 season.
Nawaqanitawase had a breakout 2022 Super Rugby Pacific season, starting in 10 of his 12 matches, scoring seven tries and playing a total of 842' in a year which saw the Waratahs finish 6th on the ladder and reach the Quarter-finals.
International rugby
Australia U20
Nawaqanitawase was a part of the U20 side that won their first title of the 2019 Oceania Rugby U20 Championship. Nawaqanitawase played twice and scored twice, with both tries being scored against Japan U20.
In 2022, following an incredibly successful year with the Waratahs, Nawaqanitawase was named in the Australia A squad for the Pacific Nations Cup. Australia A finished runner–up in the tournament. Nawaqanitawase was again named in the Australia A squad for the three-match series against Japan. He played in two matches and scored two tries in the series win.
Australia
In 2022, following a successful campaign with both Australia A and the Waratahs, Nawaqanitawase was named in the Australian squad for the 2022 Autumn internationals series.
On 13 November 2022, Nawaqanitawase was named in the number 14 jersey in his debut match against Italy which the Wallabies lost 28 to 27.
On 27 November 2022, Nawaqanitawase scored two tries against Wales helping leading the Wallabies to a 39 to 34 win.
On 7 December 2023 it was announced that he would join the Sydney Roosters in the NRL for the 2025 season, with Roosters' winger Joseph Suaalii going in the opposite direction to rugby union after the 2024 season.[14]