Renault's chief of aerodynamics Dino Toso has left the French squad after eight years working there.
Toso, whose exit had already been announced in April, has been in charge of the aerodynamics' departments since 2003, leading the team to both the drivers' and constructors' championships in 2005 and 2006.
As confirmed in April, Toso's resposabilities have been taken over by Dirk de Beer.
"I would like to thank Flavio Briatore and Bob Bell for their professional and personal support throughout my time with the Renault F1 Team, during which we have enjoyed great success together," said Toso.
"My passion for motorsport has always centred on innovative aerodynamics, and been motivated by a thirst for competition.
"I'm looking forward to tackling new challenges that will allow me to fully express my technical creativity in the years ahead, and take me back to what I love most: the thrill of competition."