Sauber have confirmed that technical director Jörg Zander has left the team with immediate effect.
The 54-year-old has stepped down from his role of technical director less than eighteen months after his appointment ahead of the 2017 season.
It has also been confirmed that Sauber’s CEO and Team Principal Frédéric Vasseur will oversee the various heads of department “until a new organisation is announced”.
Zander had been involved in a major recruitment drive at Sauber as the team sought to climb further into the midfield this season.
His previous Formula One teams include Toyota, British American Racing, Williams and Honda, as well as a previous stint at BMW Sauber from 2006-2007.
He took up the Head of Technology role at Audi Sport in 2015 before rejoining Sauber in 2017.
A statement from Sauber read:
“Jörg Zander, Technical Director of the Alfa Romeo Sauber F1 Team, will stop working for the team with immediate effect.
We would like to thank him for his dedication and we wish Jörg Zander all the best and success for the future.
“Until a new organisation will be announced, the various heads of departments and the current project leaders will continue to work on the development of the C37 and the 2019 car with the supervision of Frédéric Vasseur, CEO and Team Principal.”
The Sauber team have already scored ten points in 2018, more than 2016 and 2017 combined, marking an improvement in performance this season.