He currently plays for FC Rosengard, wearing the number 18 shirt. He plays primarily as a Forward.

His most recent move was a from BK Olympic to FC Rosengard on 2025-01-28.

In the Sweden Division 1 2025 season, Mattias andersson scored 1 goals and provided 0 assists across 27 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.