Born and raised in Christchurch, Mo'unga was initially educated at Riccarton High School in his hometown before being offered a scholarship at St. Andrew's College where he played first XV rugby for 3 years and captained them in his senior year.
Mo'unga enjoyed a rapid rise from high school to the ITM Cup via club rugby with Linwood RFC in 2013.
He wasn't named as a full member of Canterbury's squad for the 2013 ITM Cup, but was called up to cover injuries and All Black absences and went on to make 8 appearances during the campaign.
He then signed a contract with the side and was named in the squad for the 2014 ITM Cup and played in 10 matches, featuring both at first five-eighth and fullback.
Mo'unga made his Super Rugby debut for the Crusaders in 2016, and after a chain of favourable performances, the rising star was re-signed with the club through to the end of the 2019 Super Rugby season, having made 16 Super Rugby appearances scoring 179 points.
Mo'unga established himself as one of the premier flyhalves in Super Rugby competition during the 2017 Super Rugby season as he guided the Crusaders to their 8th Super Rugby title. He made 13 appearances scoring 133 points and started the Crusaders match against the British and Irish Lions.
After guiding the Crusaders to the Super Rugby title in 2017 and Canterbury to second place in the round robin stages of the Mitre 10 Cup Mo'unga earned his first call up to the All Blacks squad for their final Bledisloe Test against the Wallabies.
He did not make his debut but was included in the All Blacks end of year touring squad as one of 5 additional players in the All Blacks touring squad, meaning he will be available for selection against the Barbarians and will return to the squad for the French leg of the tour.
Mo'unga heads into the 2018 Rugby Championship with 1 test cap.
Ahead of the 2018 November International, Mo'unga has obtained 4 test caps.
JW Oct 17
|2013 - present|
|2015 - present|
|2017 - present|
|2016 - 2017|