Syarifuddin made his European motorcycling racing debut in the 2019 FIM CEV Moto3 Junior World Championship, replacing compatriot Idil Mahadi for the final round of the season in Valencia, scoring no points.
He won the first race held in Barcelona that season, finishing in front of well established talented riders such as David Muñoz, José Antonio Rueda, and Daniel Holgado.
[4] In 2022, Syarifuddin again races in the 2022 FIM JuniorGP World Championship, scoring three podiums throughout the season (all three 2nd place finishes), two in Barcelona, and one in Portimão.
He also competed in three races in the 2022 Moto3 World Championship, replacing injured Alberto Surra in Portimão and Jerez,[5] and rode as a wildcard rider in Barcelona,[6] but scored no points.
[7] On 21 October 2022, during the 2022 Malaysian motorcycle Grand Prix, it was announced that Syarifuddin would ride full-time in the 2023 Moto3 World Championship, partnering Diogo Moreira at the MT Helmets-MSi Team.