In 2013, Mason starred as Ted Keegan in the fifth season of Go Girls and he had a supporting role in crime drama The Blue Rose.
[3] Mason moved to Wellington in 2009 to study a Bachelor of Performing Arts at the Toi Whakaari New Zealand Drama School.
[5] Mason was thirteen years old when a family friend encouraged him to audition for a role in the 2005 drama film 50 Ways of Saying Fabulous.
[6][7] In 2011, Mason flew himself to Auckland from Arrowtown to audition for the recurring role of Regan Ames in the New Zealand medical drama Shortland Street.
Mason decided to contact fellow New Zealand actor Danielle Cormack and her agent secured him an audition for a Channel 7 pilot.
The show was not picked up, but he was then asked to audition for the role of Martin "Ash" Ashford in the soap opera Home and Away.
[17] He also joined the cast of Dirt Music, a film adaptation of Tim Winton's novel of the same name, alongside Garrett Hedlund and Kelly Macdonald.