Sebastian Mendoza is a graduate of Carnegie Vanguard High School. He has been a part of Carnegie Theatre since his freshman year, beginning with working on scenic during the production of Native Son. Mendoza served as scenic charge during A Streetcar Named Desire, and later on returned to co-scenic charge during Airness. Mendoza also served as sound head during Cyrano De Bergerac, Puffs, Lord of The Flies, and The Taxidermist’s Daughter, along with assistant designing and running Crime & Punishment. Outside of these departments, Mendoza has also worked on projections and lighting during a variety of shows, along with being part of ensemble cast during Crime & Punishment.

Mendoza has also been a part of the ITS Board, serving as Master of Webs for both the 2024-2025 and 2025-2026 seasons.