He played for Oak bay Scondary school, a historic rugby program in his home town.

[2][3] In 2018, Mack signed with the Seattle Seawolves in the inaugural season of Major League Rugby as a player/head coach.

His team went onto win the first ever MRL Shield trophy in the Championship against the Glendale Raptors.

In 2019, Mack continued his MLR career with the Seawolves as a player and full-time backs coach and won another Shield trophy, becoming a back-to-back champion.

In 2020, Mack and his wife, Becky welcomed a new baby boy, Tate Joseph, into their family.