He played for Western Suburbs in the Central League that features teams from the lower half of the North Island of New Zealand.

[11] Just was part of the New Zealand U-17 team that won the 2017 OFC U-17 Championship, qualifying for the U-17 World Cup in India.

[13][14] Just was originally called up to be part of the New Zealand U-20 side to play at the OFC U-19 Championship in Tahiti but withdraw for club commitments with Western Suburbs.

[16][17] On 15 November 2019, Just made his national team debut for New Zealand in a friendly against Ireland, starting in their 1–3 loss.

[18] Just scored his first international goal against Fiji in their 4–0 win during the 2022 FIFA World Cup qualifiers in Qatar.