A former two-time winner of the Monaco Kart Cup, Salignon moved into Formula Renault in 2000, competing in both the European and French championships. Solid campaigns in both championships enabled Salignon to finished 16th in his national championship, and one place lower in the pan-European series. He continued in both series in 2001, driving for Graff Racing. He finished fifth in the Eurocup, in just seven races. With his focus on the French series, he won that particular championship by 37 points. This performance earned him a spot in the inaugural Renault Driver Development programme in 2002. Salignon's 2002 season was impressive, as he won the Eurocup by four points from Neel Jani, and lost the French title by just two points to Alexandre Prémat. In fourteen races, he won seven and finished on the podium a further three times.
Continuing on the RDD in 2003, Salignon moved to the British Formula 3 Championship driving for David Hayle's Hitech Racing team. Teaming up with fellow RDD driver Danny Watts, Salignon claimed a solitary pole position at Thruxton, and led that race until five laps from the end, colliding with the eventual champion Alan van der Merwe. He redeemed himself with his best finish of the season at the following round at Spa with second place. He eventually finished twelfth in the championship, but was consequently dropped by Renault for the RDD. For 2004, Salignon moved into the Formula Three Euroseries driving for the ASM team, joining his former Formula Renault rival Prémat and British driver Jamie Green, who had competed against Salignon in British F3. Salignon won races at Estoril, Adria and Zandvoort before leaving the team, whilst lying in third place in the championship. He ended up finishing sixth in the standings, and was also the runner-up to Prémat at the prestigious Masters of Formula 3, also at Zandvoort.
After leaving ASM, Salignon signed up to compete in the World Series by Renault for its debut season in 2005, with the series having previously been named the World Series by Nissan. He competed for the Cram Competition team, and ended up tenth overall tying on points with Jaap van Lagen. He did miss the Estoril rounds of the championship though, with British driver Ben Hanleyreplacing him. Hanley ended up taking Salignon's seat at Cram for the 2006, with Salignon moving to Interwetten. Salignon started the season off with a double win at Zolder, which was only ratified a month after the conclusion of the season. Salignon had lost the first of his two wins, due to the race results being completely annulled, after protests from a rival team. He had since left the team by the time he got his second win back, having been replaced by Franck Perera for the final round, in order for his team to successfully clinch the teams championship. Since being replaced, he has not taken part in any major international championship.
