Alexander earned his spurs in motor sports in the Swiss Formula Ford Championship, in which he got in the mid-1990s. In 1996 he won the overall title of this championship. In Switzerland in 1955 circuit races are generally prohibited since the disaster of Le Mans. The championship therefore had to be based on race tracks in Germany, Austria and Italy. For lack of alternatives Alexander moved initially to the USA, where it was in 1999 in the Barber Dodge Pro Series, came back to Europe in 2001 and has since been engaged in the sports car.
First, Alexander received a cockpit of a Ferrari 360 Modena from JMB in the French GT Championship. The team, however, also drove in the FIA GT and allowed Alexander there several inserts. The races of both series were carried out mainly with Peter Kutemann as partners and were characterized by multiple failures and midfield positions. Nevertheless, Alexander 2002 rose by JMB now firmly in the FIA GT Championship in. Despite the frequently changing driver pairings he finished at the end of the race in Pergusa with Andrea Montermini as teammates on the podium. For the following season, Alexander returned to the franzöisische GT Championship and now piloted with a Chrysler Viper GTS - R is a vehicle the more powerful SGT category. The team paused in late summer for a race, Alexander was awarded the opportunity for JMB at the 24 - hour race at Spa -Francorchamps participate to return later in the United States. JMB was now also active in the American Le Mans Series and led some pilots for the long haul Petit Le Mans race in the series one. Alexander denied prior to the championship race at Road Atlana, three more races until he returned to the end of the season in the French GT Championship. In early 2003 JMB reported him to the 24- hour race at Daytona. Alexander remained thereafter for another championship run in the Grand-Am before he moved to the FIA GT Championship and two guest appearances for GPC and JMB completed.
In 2005 he finished in the meantime his commitment to JMB and changed again to Red Racing in the French GT Championship. The team now has a Lister Storm in the GT1 category. Together with Gaël Lesoudier he won in a championship race at the Circuit de Pau Ville before the team ended prematurely after several failures the season. In 2006, again at JMB, he went with Tim Sugden another year in the FIA GT Championship. A class win and more podiums stood at the end of the year against several failures.
In 2007 he drove in the Le Mans Series for Swiss Spirit the entire season, including the 24 Hours of Le Mans, where he made his debut. As a partner of Jean -Denis Delétraz and Marcel Fässler he piloted a Lola B07/10 there with turbo engine of the Audi R8. For the 2008 season, Alexander signed with Swiss team Speedy Racing Team and reinforced the racing team to Andrea Chiesa and Benjamin Leuenberger at the 1000 km race at Spa -Francorchamps and the 24 - hour race at Le Mans. He was also reported for the first two Cup races of the International GT Open and drove there a Ferrari F430 GTC, until he was replaced by his compatriot Henri Moser. 2009 Alexander remained in the International GT Open, but moved to the GT3 category to Jean -Claude Lagniez. However, he took part at only three race weekends of the series. Finished the driver duo their first two races in Algarve on the podium, the results deteriorated in the following two events. In addition, team owner Lagniez admitted at Donington his driving position in favor of Miquel Julia Perello. The next race weekends but had to resign Alexander to the team owner. At the beginning of the year, the team also announced Lagniez in the FIA GT Championship at. Since the Corvette Z06R GT3 was the only participant in the G3 class into the race, he and Lagniez finished the race as a class winner.