Sébastien Olivier Buemi (born 31 October 1988) is a Swiss professional racing driver, who competes in the FIA Formula E Championship for Envision Racing. He competed for Scuderia Toro Rosso in Formula One from 2009 to 2011. After leaving Formula One, Buemi became a reserve driver for Scuderia Toro Rosso's sister team, Red Bull Racing from 2012 to 2013. He returned to Red Bull Racing in 2019 as a reserve driver.