Guevara first role was in Law & Order as Lucita in 1997. Also in 1997, she starred in the film, The Hotel Manor Inn as Denise. Guevara would then guest star in 2 episodes of Law & Order: Special Victims Unit in 2002 and 2005 as Annie Colon and Julia Ortiz respectively. She would guest star in Law & Order again as Salma in 2003. In 2006, Guevara starred in the series 3 lbs as Melania Ortiz. In 2013 held the role of Yazmin in the award-winning Quiara Alegría Hudes play Water by the Spoonful at Second Stage Theater. In 2014, she landed the role of Trask's Secretary in the film X-Men: Days of Future Past. Also in 2014, Guevara landed the role of Sarah Essen in Gotham.
