Tefft received a High-End CG Certificate from Gnomon in 2001, where Tefft honed his computer animation skills. Tefft started working for Look Effects Inc., a Hollywood based post-production and animation house in 2000 and finished his career their as a 3D supervisor. He is currently the 3D supervisor at Gradient FX and head of the LA Office. Some of the films that he has been credited with have been Southland Tales (2006), Next (2007), The Fountain (2006), Rocky Balboa (2006), and The Passion of the Christ (2004). Tefft has taught at the USC art department and is currently an instructor at Gnomon.