He previously played for the New Zealand Warriors, the St. George Illawarra Dragons and the Canberra Raiders in the National Rugby League.

Havili made his first grade debut in Round 6 of the 2014 NRL season against the Canterbury-Bankstown Bulldogs playing off the bench in the Warriors 21–20 loss at Eden Park.

[7] On 28 April 2014, after just playing in 3 NRL matches, Havili earnt a surprise call-up to the Kiwis squad to take on Australia in the 2014 Anzac Test at SFS.

[11] On 7 October 2014, Havili was selected in the New Zealand national rugby league team final 24 man squad for the series.

Lafai and Havili were charged with common assault and offensive behaviour, but later escaped conviction with a guilty plea.

After producing a string of excellent performances in the World Cup, he was signed to a one-year contract by the Canberra Raiders.

[25] Havili played a total of eight games throughout the 2023 NRL season as South Sydney finished 9th on the table and missed the finals.