Diaz is known for his role as Quentin in the Netflix series Unbreakable Kimmy Schmidt and Sonny in the musical drama In the Heights.
[1][3] He attended Professional Performing Arts High School for one semester before transferring to Dwight Global Online.
In 2016, Diaz joined the revival and first all-kid professional cast of You're a Good Man, Charlie Brown as Schroeder at the York Theater.
Diaz played the role of boy in January 2018 in the production of Zurich [7] at NYTW, and earned a nomination for Outstanding ensemble at the New York Innovative Theatre Awards - Home.
[9] In June 2018, it was announced that Diaz had been cast as Luis Acosta in the comedy film Vampires vs. the Bronx.