She began her career on television with guest-starring roles. In 2007, she had supporting role in film
The Hitcher. She later returned to television and had number of guest and recurring roles on dramatic series. She played Mariella Moretta in the TNT crime drama,
Southland from 2009 to 2011, and Theresa Lopez on the
ABC Family drama,
The Lying Game (2012–2013). She also had recurring roles on
Vanished,
The Unit,
Breakout Kings, and
Nashville. Martínez was regular cast member on the short-lived primetime soap opera,
Hollywood Heights in 2012. In 2013, she began starring in the
Amazon comedy series,
Alpha House. In 2014, Martínez also was cast as recurring in The CW comedy-drama
Jane the Virgin, and HBO crime drama
True Detective. Martínez portrayed Ms. Lint in the Amazon series,
The Tick. Martínez stars as Dr. Paula Reyes in the Fox series
Deputy. After playing the recurring character Isabella "Izzy" Colón for the first four seasons of the
CBS legal drama
Bull, Martínez was upgraded to series regular for season 5 (2020–21). == Filmography ==