He began his professional career with Liefering, Salzburg’s feeder club, during the 2023/24 season and went on to make 39 league appearances, scoring twice.
Schuster made his Red Bull Salzburg debut in a 4-2 Austrian Bundesliga win over Rapid Wien in May 2025, following an impressive term with Liefering and Salzburg’s youth side.
He captained Salzburg Under-19s as they reached the semi-finals of the UEFA Youth League, before becoming a regular part of the senior squad ahead of the 2025/26 campaign.
Schuster was part of the squad for the 2025 FIFA Club World Cup, and was named among the substitutes for all three of their Group H fixtures against Pachuca, Al-Hilal and Real Madrid.
He has represented Austria at under-16, under-18, under-19 and under-21 level.