Jean made his single-seater debut in 2016, racing in the FFSA Academy-centrally run French F4 Championship.[2] After taking his maiden podiums at Pau and Lédenon,[3] Jean scored his first series win and only one of the season at Magny-Cours en route to an eighth-place points finish.[4] Returning to the series for 2017, Jean started the season with a double podium at Nogaro,[5] followed up by his only win of the season in race two at Monza.[6] In the following five rounds, Jean only finished on the overall podium in race one at Spa,[7] to end the season fourth in points.[8] Towards the end of 2017, Jean raced in the final three rounds of the V de V Challenge Monoplace for RC Formula, in which he won all three races at Estoril.[9]
The following year, Jean joined Ginetta-fielding CMR to race in both the French GT4 Cup and GT4 European Series.[10] After scoring one podium in the first two rounds, Jean switched to an Alpine A110 for the rest of the year,[11] scoring wins at Magny-Cours and Le Castellet to end the year third in the Pro-Am standings.[12] It was a similar case in the latter, in which the switch happened ahead of the Spa round, in which he won race two en route to an eighth-place points finish in the Silver class standings.[13] At the end of the year, Jean raced in the GT4 International Cup for the same team, winning the only edition of the event alongside Pierre Sancinéna.[14]
Continuing in GT4 competition for 2019, Jean remained with CMR for his sophomore year in both the GT4 European Series and the French GT4 Cup.[15] Taking only two points finishes in the former, Jean found more success in the latter, winning both Nogaro races and taking further wins at Lédenon and Spa to secure runner-up honors.[16][17][18] During 2019, Jean made a one-off appearance in the Blancpain GT Series Endurance Cup round at Barcelona for Saintéloc Racing, in which he took the Pro-Am spoils on debut.[19]
Moving up to GT3 racing full-time the following year, Jean remained with CMR to race in both the GT World Challenge Europe Endurance and Sprint Cups,[20] as a member of the Bentley Motorsport Academy.[21] Enduring a scoreless season in the former, Jean scored a Silver Cup win and overall podium in the latter's Zandvoort round, as well as two other class podiums to finish the season sixth in the Silver standings.[22] In 2021, Jean returned to CMR to race in the Sprint Cup full-time,[23] scoring three Silver class podiums and a class pole at Zandvoort to once again end the season sixth in the class points.[24][25] During 2021, Jean also raced in the last three rounds of the Endurance Cup for the same team, also in the Silver class.[26]
Jean's AF Corse Ferrari 488 GT3 Evo at Magny-Cours in 2022.
Jean remained in the Sprint Cup for 2022, as he joined Ferrari-affiliated AF Corse for this third season in the series.[27] Driving alongside Ulysse de Pauw, the pair scored outright wins at Brands Hatch and Valencia,[28][29] as well as taking four other class wins to seal the Silver class title with a round to spare.[30] During 2022, Jean also raced in the 24 Hours of Spa for Audi-fielding Tresor by Car Collection.[31]