From 2010, Philipsen rode for the Royal Balen BC team. In 2015, he became national junior time trial champion. Later that year, he finished eighth at the European championships in the same discipline and sixth at the world championships.[9] One year on, Philipsen won the Guido Reybrouck Classic and E3 Harelbeke for juniors, and successfully defended his national time trial title. In addition, in the same year he finished fifth in Paris-Roubaix for juniors and 11th in the Omloop der Vlaamse Gewesten. Philipsen made the cut for both the time trial and the road race at the world championships in Doha. Upon the time trial, in which he set the 18th fastest time, he was hospitalised with exhaustion and overheating. Although Philipsen appeared to have convalesced, he didn't make the road race three days later.[10]
On 1 April 2017, Philipsen secured his first UCI victory as an elite rider, for the BMC Development Team team. In the second stage of the Triptyque des Monts et Châteaux, he beat fellow-Belgian Milan Menten and Dutchman Maarten van Trijp in the bunch sprint.[11] The day after, courtesy to a fifth place in the individual time trial, he snatched the leader's jersey from Chris Lawless. In the final stage, he finished fourth, taking not only the overall classification, but also the points ranking and youth classification. After finishing second in both the Tour of Flanders U23 and the ZLM Tour, he won a stage in the Baby Giro in June. In the points ranking, he kept one point ahead of Neilson Powless. In July, he won the second stage in the Tour of Alsace, after which he rode the hopefuls road races at both the European and national level. In the fifth stage of the Olympia's Tour, he beat Patrick van der Duin and Fabio Jakobsen in the bunch sprint. In October, he won Paris–Tours Espoirs.[12]
Philipsen made the startlist for the 2019 Tour de France.[15] He participated in the 2020 Vuelta a España,[16] where he won stage 15. He participated in his second Tour de France in 2021 and while he did not win any stages he had many promising results including making the stage podium a half dozen times. He rode in the 2021 Vuelta a España where he won two stages.[17] He also wore the points ranking jersey in several stages, vying with Fabio Jakobsen for the jersey, before abandoned halfway through due to a mild fever.[18]
Early in the 2022 season he won the points ranking and two stages of the UAE Tour. He then won the points ranking and a stage in the Tour of Turkey and a stage in the Tour of Belgium.
He entered the 2022 Tour de France with the team pursuing stage wins for both Philipsen and Mathieu van der Poel. Philipsen initially thought he had won stage 4, but Wout Van Aert turned out to have taken the peloton by surprise, attacking as the yellow jersey. After the Alps he got a chance to win stage 15 after the final breakaway rider had been run down during the final kilometre. He managed to outpace previous stage winners Van Aert and Mads Pedersen, taking the team's first win of the race.[19] His second stage win came on the final day in Paris, winning the sprint by a convincing margin.
Sports journalists occasionally compare Jasper Philipsen to Tom Boonen, as both hail from the same region in Flanders and are routinely qualified as sprinters, specialising in classics.[29]
"Philipsen is not only fast, he also always seems to position himself very well during bunch sprints. We are talking about making good decisions in a split second, while racing at more than 70 km per hour. This also proves he's still in a top condition at those moments. One makes easier mistakes when exhausted."
Philipsen is one of the most prolific cyclists of his generation.[31] By 2022, several international specialized media considered him to be the best sprinter in the world.[32][33]
He drew some criticism for his riding style during the 2023 Tour de France, as he appeared to interfere with other riders on several stages.[34] This criticism reemerged during the 2024 Tour, as he was relegated to the back of the peleton for interfering with Wout van Aert in a bunch sprint; costing him green jersey points as he had originally finished second.[35]
Major results
2015
1st Time trial, National Junior Road Championships
^"UCI approves Axeon Pro Continental status". Cyclingnews.com. Immediate Media Company. 4 December 2017. Retrieved 24 January 2018. The team has announced eight riders so far for the 2018 roster, including João Almeida from Portugal, William Barta from the US, U23 time trial world champion Mikkel Bjerg from Denmark, Cole Davis from the US, Zeke Mostov from the US, Jasper Philipsen from Belgium, Thomas Revard from the US and Maikel Zijlaard from the Netherlands.