In his first test he was over half a second faster than regular driver Érik Comas and Julian was considered a potential candidate for a race seat in 1995.
[3] In preparation for his testing duties with Larrousse, Julian entered the FIA International Formula 3000 series for three races in 1994 and made his debut at Circuit de Spa-Francorchamps in Belgium for the Omegaland team.
In 1997 he tested a Formula Nippon car at the Suzuka Circuit in Japan and was offered a contract for the following season but a lack of funding kept him out of racing until 1999 when he made two Atlantic Championship starts for the PDR team resulting in a fifth-place finish at Long Beach and a DNF in Montreal.
[4][5] Julian also drove the Oreca prototype in the FLM class of the 2011 Le Mans Series season finishing 2nd at Circuit Paul Ricard in France, 2nd at Spa Francorchamps in Belgium and 4th at the Autodromo Enzo e Dino Ferrari in Imola, Italy.
For 2012, Julian signed with the Greaves Motorsport team to drive the Zytek-Nissan Z11SN LMP2 prototype chassis in the eight round 2012 FIA World Endurance Championship season, which included the 80th running of the 24 Hours of Le Mans.
[8] In 2012 DragonSpeed ran an extensive test program with their new Audi R8 LMS ultra FIA GT3 in preparation for the 2013 Dubai 24 Hours endurance race, marking the international debut for the team.
Julian then brought the team back to the United States to contest the 2013 American Le Mans Series in the Prototype Challenge class with Mirco Schultis, Renger Van Der Zande and Pierre Kaffer sharing driver duties.