Mason grew up in a dance-oriented family in Miami, Florida, and she began her dance training at the age of three. Mason began her study of theatre at age 11 with community and middle school productions. At the age of 18, Mason competed on the fifth season of the show So You Think You Can Dance (2009), becoming the youngest winner in the history of the competition. Mason later turned to acting and appeared on a number of shows, most notably the recurring roles on ABC Family’s Bunheads as Cozette, and on ABC's Grey's Anatomy as Dr. Sam Bello.
In February 2018, it was announced that she joined the pilot of Roswell, New Mexico as Liz Ortecho. The CW ordered the show to series on May 11, 2018.
- On February 16, 2018, Mason received a congratulatory tweet on her casting in the The CW series from Shiri Appleby, who also portrayed Liz Parker in the 1999 drama entitled Roswell.