From 2010, Philipsen rode for the Royal Balen BC team. In 2015, he becamenational junior time trial champion. Later that year, he finished eighth at theEuropean championships in the same discipline and sixth at theworld championships.[9] One year on, Philipsen won the Guido Reybrouck Classic andE3 Harelbeke for juniors, and successfully defended his national time trial title. In addition, in the same year he finished fifth inParis-Roubaix for juniors and 11th in theOmloop 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 theBMC Development Team team. In the second stage of theTriptyque des Monts et Châteaux, he beat fellow-BelgianMilan Menten and DutchmanMaarten 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 fromChris 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 theTour of Flanders U23 and theZLM Tour, he won a stage in theBaby Giro in June. In the points ranking, he kept one point ahead ofNeilson Powless. In July, he won the second stage in theTour of Alsace, after which he rode the hopefuls road races at both the European and national level. In the fifth stage of theOlympia's Tour, he beat Patrick van der Duin andFabio Jakobsen in the bunch sprint. In October, he wonParis–Tours Espoirs.[12]
Philipsen made the startlist for the2019 Tour de France.[15] He participated in the2020 Vuelta a España,[16] where he won stage 15. He participated in his secondTour 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 the2021 Vuelta a España where he won two stages.[17] He also wore the points ranking jersey in several stages, vying withFabio 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 theUAE Tour. He then won the points ranking and a stage in theTour of Turkey and a stage in theTour of Belgium.
He entered the2022 Tour de France with the team pursuing stage wins for both Philipsen andMathieu van der Poel. Philipsen initially thought he had won stage 4, butWout Van Aert turned out to have taken the peloton by surprise, attacking as the yellow jersey. After theAlps 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 andMads Pedersen, taking the team's first win of the race.[19] His second stage win came on thefinal day in Paris, winning the sprint by a convincing margin.
Philipsen won the opening stage of the2025 Tour de France, meaning that he also got to wear the yellow jersey for the first time.[30] During the intermediate sprint on stage 3, Philipsen was involved in a high speed crash, as a result ofBryan Coquard colliding with him, which forced him to abandon the race.[31] It was later revealed that he suffered a displaced collarbone fracture which would require surgery and broken ribs.[32] Philipsen underwent successful surgery at AZ Herentals in Belgium, the same night of the crash.[33]
Sports journalists occasionally compare Jasper Philipsen toTom Boonen, as both hail from the same region in Flanders and are routinely qualified as sprinters, specialising inclassics.[34]
"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.[36] By 2022, several international specialized media considered him to be the best active sprinter in the world.[37][38]
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.[39] This criticism reemerged during the 2024 Tour, as he was relegated to the back of the peloton for interfering withWout van Aert in a bunch sprint; costing him green jersey points as he had originally finished second.[40] During his first race of his 2025 season, he was relegated for deviating from his line yet again, this time during a second-place finish in theUAE Tour.[41]
^"UCI approves Axeon Pro Continental status".Cyclingnews.com.Immediate Media Company. 4 December 2017. Retrieved24 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.