Sébastien’s racing career started at the age of 8, three years after getting his first kart, as a Christmas present in 1993. After something of a tough first year, he won the Swiss Minis championship at the age of 9. From 1998 to 2002, he won four Swiss karting titles: Mini, Mini90, SuperMini.
It was in July 2007 that Sébastien drove a Formula 1 car on a racetrack for the very first time, when he got behind the wheel of the Red Bull at the Jerez circuit in Spain.
For the first season of Formula E in 2015, Sébastien finished 2nd in the championship. He lost for 1 small point to Nelson Piquet Jr. In the 2nd season of Formula E, Sébastien wins the championship in London in front of Lucas Di Grassi for this time 1 point. The 2018 season saw Sébastien conclude the championship in 2nd, and in the 2019/20 season he finished in 4th.
A couple of difficult seasons followed, and the move was made to join Envision Racing for the Gen3 era. He secured two pole positions, one podium and 105 points to finish 6th in the drivers’ standings and contributed significantly to Envision Racing’s Team World Championship victory.