In his career, he has been a member of the most significant groups of El Sistema[2] founded by José Antonio Abreu, such as the Simón Bolívar Youth Orchestra, the Simón Bolívar Brass Quintet and the Simón Bolívar Brass Ensemble, with which he has undertaken numerous concert tours in America, Europe and Asia, and obtaining diverse recognitions, including awards, sponsorships, representation by international artistic agencies like Askonas Holt (England), Kajimoto (Japan), Sony Music Foundation (Japan), and taking part in recordings for the Deutsche Grammophon, EMI Classics and EUROARTS labels.

[3] In that same year, together with the works "Arrival of a Noble Maestro" and "Walking Faster", it was performed by the Venezuelan Brass Ensemble at the Bergen International Festival (Norway) and Carnegie Hall in New York.

[4][5] In 2007, Castro composed the soundtrack for the Web drama series "Maleficio", the first of its kind in Venezuela, which was created by the Caicedo brothers for Taurus Productions.

Its world premiere was performed by the Simón Bolívar Youth Symphonic Band of Venezuela, conducted by Sergio Rosales in the Théâtre du Châtelet (Paris, France) on 7 July 2013.

[7] On December of this same year, he became a gold medal winner for his work "Rhapsody for Talents" in the category Original Score and Composition / Composer at the Global Music Awards in San Diego, California.

In 2017 he moved to the United States to develop his musical career, this year his piece "Grand Fanfare" was performed by The President's Own United States Marine Band in the U.S. Capitol in Washington, D.C., conducted by Colonel Jason K. Fettig,[8] his Concerto for Tuba was performed by Carol Jantsch, principal tuba of the Philadelphia Orchestra at the Berkshire Summer Music Summer Festival and Interlochen Center for the Arts, Castro was invited as a guest composer and conductor by the University of Minnesota Duluth Department to offer lectures of his works and conduct the Senior High School Honor Band Festival and the Twin Ports Wind Orchestra in the Weber Music Hall.