Jaz was one of the first major writers to begin working in the streets of Buenos Aires in the 1990’s, and is one of Argentina's most celebrated urban artists. His comfort working at enormous scales, his unique style and unconventional use of materials set him apart from his contemporaries and have earned him international acclaim.
His early works in aerosol incorporated "fileteado", a traditional Argentine sign writing technique, and the motif of a lion can be seen in works throughout his career.