Born in Samoa, he represents New Zealand at international level after qualifying on residency grounds.
Sititi attended De La Salle College, Auckland, where he was deputy head boy and captained the First XV.
Sititi has represented North Harbour in the National Provincial Championship since 2022, being named in their full squad for the 2023 Bunnings NPC.
[6] On 24 June 2024, Sititi was named in the first All Blacks squad of the year for the 2024 Steinlager Ultra Low Carb Series.
[7] On 20 July 2024 Sititi made his All Blacks debut as a replacement in the test match against Fiji played at Snapdragon Stadium in San Diego, California.