In 1996, Quaroni interviewed during SIGGRAPH in New Orleans for a position at Pixar and in January 1997, he moved to the United States to start working on Toy Story 2 (1999). He worked initially as a generalist Technical Director on Toy Story 2 by performing, modeling, articulation, shading, and special effects tasks. In 2000, he was promoted as a sequence supervisor for the movie Monsters, Inc. (2001) focusing on dynamic simulations and special effects. Upon completion of the movie in 2001, Quaroni moved to the Software R&D division, leading the team responsible for the shading and texturing production pipeline.