[citation needed] Nikorima played his junior rugby league for the Aspley Devils and the Pine Rivers Bears (where he won a competition).

[4][5] His younger brother Jayden Nikorima is also a professional rugby league footballer who plays as a five-eighth for the Melbourne Storm in the NRL.

[14][15] In Round 20 against the Gold Coast Titans, he scored his first NRL career try in the Broncos' 34-0 win at Suncorp Stadium.

[16] On 4 October, he played off the interchange bench in the Broncos' 17-16 golden-point extra-time loss to the North Queensland Cowboys in the 2015 NRL Grand Final.

[20] He was one of four members of Brisbane's grand final team to be included in coach Stephen Kearney's squad for the three-test tour and one of six rookies to have received an international call-up by the Kiwis.

On 2 November, he made his international debut against England, playing off the interchange bench in the Kiwis' 12-26 loss at KC Stadium.

[21][22] In the second test of the series, he was chosen to start at halfback over fellow rookie Tuimoala Lolohea, in the Kiwis' 9-2 win at London Olympic Stadium.

[24][25] On 6 May 2016, Nikorima played for New Zealand against Australia in the 2016 Anzac Test, starting at five-eighth after being originally named on the interchange bench in the Kiwis' 16-0 loss at Hunter Stadium.

On 5 October 2017, Nikorima was named in the 24-man New Zealand Kiwis squad for the 2017 Rugby League World Cup.

[44] In 2023, Nikorima made his club debut and scored a try for the Dolphins in round 3 against the Newcastle Knights at McDonald Jones Stadium.