Ang got her start in television at a young age through the hit family series McDonald’s Young Entertainers. Here, she got to show her skills at singing and dancing, much like the Mickey Mouse Club show on US television. She is best known for her role as Lori Lee in the Australian television soap opera Neighbours, in which she was a major character in 2002 – 2003, and guest-starred in 2004. Also in 2004, she auditioned for the Cho Chang role in Harry Potter and the Goblet of Fire, but in the end the role was given to Katie Leung. Before that she played Tai-San in the New Zealand post-apocalyptic drama The Tribe, present in the core cast from 1999 to 2001, and featuring in the final episodes of the 2002 series. Ang also guest starred in the final 2 episodes of Xena: Warrior Princess as Akemi. She played the role of Tracy Hong in seasons 1 and 2 of the New Zealand TV series Outrageous Fortune in 2005 and 2006.

Ang made her film debut in Futile Attraction. Ang also appeared in a series of low-budget New Zealand short films including Forbidden Fury in 2004. Her most recent film credit was on No.2, directed by Toa Fraser and nominated for Audience Choice Awards at the Cannes Film Festival.

In 2007, Ang appeared in the American television drama, South of Nowhere.

In 2012, Ang features in the MTV series Underemployed as an aspiring writer who has to settle for working at a donut shop.

In 2015, Ang starred in the web series Fear the Walking Dead: Flight 462 as Alex, a passenger caught on a flight at the beginning of the zombie apocalypse, and went on to join the main cast in the main series Fear the Walking Dead.

Ang welcomed her first child, a son called Koda, with her partner Alex in November 2016.