"It is a pleasure to welcome Jorge Diez back to lead our design team. With his expertise and commitment, an outstanding design language is ensured for the future Seat and Cupra models," Tietz said in a statement.
Diez has spent almost his entire two-decade-long career in exterior design, leading Seat in that area from 2011 to 2014, during which time he was instrumental in the looks of the third-generation Seat Leon, the fourth-generation Seat Ibiza and the Seat Ateca, the brand's first SUV. He has also worked at both Audi and at VW brand.
Diez created models such as the second-generation Audi TT and the first-generation Audi A7. He also worked on Lamborghini sports cars and Ducati motorcycles.
"Jorge Diez is one of the most talented designers in the automotive industry. His signature is on many of our key cars from the last decade, such as the Leon, the Ateca and the Ibiza, and it is great news that he’s returning to Seat," Seat President, Wayne Griffiths, said in the statement.
Diez studied car design in Valencia, before earning a degree in the discipline from the Royal College of Art in London.