[1][2][3][4][5] Born in Auckland, Gibson attended Saint Kentigern College in the city and captained their first XV to victory in their local 1A championship.
[5] Gibson joined the Auckland ITM Cup team in his first year out of school and made a total of 9 appearances in his first full season scoring 2 tries.
Named again to play in the Auckland side for the 2015 ITM Cup, he started the opening game of the season at openside flanker, but suffered a knee injury in the first ten minutes that kept him out for the duration of the campaign.
He made 9 appearances, 6 of which were from the start and scored his debut Super Rugby try, making easy work of All Blacks fullback Ben Smith by throwing him and 3 other defenders off.
Gibson was named to start for an experienced NZ Barbarians side that played against the Maori All Blacks, shortly after the conclusion of the 2015 Super Rugby Season.