Career
He spent 2 seasons with the Cambridge Blues and scored 5 tries in 14 appearances before heading down to the South Island to join the Tasman Makos in 2012. On 8 April 2015, it was announced Heem would move to England to join Worcester Warriors in the Aviva Premiership from the 2015-2016 season. Heem marked his debut with a try in a victory over Newcastle Falcons in November 2015.
Heem represented the All Blacks Sevens side from 2011 until he signed his Super Rugby contract with the Chiefs.