Ng Shiu made his international debut for New Zealand Sevens in 2017.

He was named in the New Zealand squad for the Rugby sevens at the 2020 Summer Olympics.

[2] Ng Shiu was part of the All Blacks Sevens squad that won a bronze medal at the 2022 Commonwealth Games in Birmingham.

[3][4][5][6] He was selected for the team again for the 2022 Rugby World Cup Sevens in Cape Town.

[15][16] This biographical article relating to New Zealand rugby union, about a person born in the 1990s, is a stub.