 After his internship at the Pininfarina design studio, he decided to stay in Turin rather than return to the US to complete his studies.As a designer he took part in the design of production cars such as the Ferrari 599 GTB Fiorano and Maserati GranTurismo, concept cars like the Maserati Birdcage 75th and the Rolls Royce Hyperion, and, as Head Designer for Special Projects, one-off exclusive cars for particular customers, such as the Ferrari P4/5 by Pininfarina, a restyled Enzo Ferrari for American car collector James Glickenhaus, and the Ferrari 612 Kappa, a restyling of the Ferrari 612 Scaglietti for car collector Peter Kalikow.Castriota left his position at Pininfarina on the eve of the Paris Motor Show in September 2008, and was set to become Design Director at Stile Bertone.