Viliko attended Onehunga High School in Auckland.[1][2] She made her debut for Auckland in the Farah Palmer Cup in 2018. She also plays for Marist in the Auckland club competition.[2] She missed most of the 2021 Farah Palmer Cup season due to her recovery from an ACL knee reconstruction.[2]
2021–22
Viliko attended a Black Ferns High Performance camp in October 2021.[3][4] On 3 November, Viliko was named in the Blues squad for the inaugural Super Rugby Aupiki competition.[5][6] She was named on the Blues bench for their first game against Matatū, they won 21–10.[7][8] She also featured in their 0–35 thrashing by the Chiefs Manawa in the final round.[9][10]
Viliko joined the Black Ferns 2023 training squad for four months as an injury replacement for Awhina Tangen-Wainohu, who is out due to a neck injury.[12] She made her test debut on 30 September against the Wallaroos at Hamilton.[13][14]