The talented and electric outside back Sean Wainui first represented New Zealand on the world stage after playing for the 2015 New Zealand Under 20 team, who won the World Rugby Junior World Championship in Italy. Returning from the Italy he joined the Māori All Blacks for the first time in 2015.

Since making his Investec Super Rugby debut in 2016 Wainui has represented New Zealand as a part of the Māori All Blacks.

Wainui is a core member of the Taranaki provincial side for the Mitre 10 Cup and has developed into an consistent finisher for the Gallagher Chiefs since his debut for the side in 2018.

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