He turned professional in 2023 with the CUBE Factory Racing XC Team after completing a commercial apprenticeship. In 2024, he became the U23 European Champion in Cross-Country (XCO) and won bronze in the team relay with Switzerland. That same year, he claimed the Swiss U23 National Championship title and secured multiple podium finishes in the UCI World Cup. Also active in cyclocross, Finn won the 2025 Swiss U23 National Cyclocross Championship. Known for his consistency, technical skills, and mental strength, he is now considered one of the top U23 riders globally.