Swiss racer Sebastien Buemi has been confirmed as Red Bull Renault's test and reserve driver for the 2008 season.
The youngster from Aigle in Switzerland took part in five GP2 races in 2007 standing in for former Red Bull protégé Michael Ammermuller and finishing in the points on four occasions. In addition Buemi finished as runner-up in the F3 Euroseries.
Prior to that Buemi has raced in the A1GP series and was runner-up in the German Formula BMW championship in 2005.
As well as testing with Red Bull, the 2002 European karting champion will compete in the GP2 series with Arden International in 2008.