He originated the role of Grover in The Lightning Thief: The Percy Jackson Musical and starred in Pasadena Playhouse's production of Little Shop of Horrors as Seymour Krelborn.

[6] In the summer of 2013, Salazar became an understudy in The Public Theater's Off-Broadway production of David Byrne and Fatboy Slim's Here Lies Love, directed by Alex Timbers.

In April 2014, Salazar rejoined the cast of Here Lies Love in an open-ended commercial run at the musical's original home, The Public Theater, as an onstage member of the ensemble.

In 2015, he joined the cast of the musical adaptation of Ned Vizzini's Be More Chill as Michael Mell at the Two River Theater in Red Bank, New Jersey.

[12] In 2018, he reprised his role as Michael Mell in Be More Chill in the Off-Broadway premiere of the musical at Signature Theatre Company from July to September 2018.

[citation needed] In 2019, Salazar played Michael Mell in Be More Chill at the Lyceum Theatre from February 14, 2019, to August 11, 2019, on Broadway.

[citation needed] In 2019, he starred in Little Shop of Horrors at Pasadena Playhouse as Seymour Krelborn from September 17, 2019, to October 20, 2019.