He currently plays for Fortuna Koln, wearing the number 9 shirt. He plays primarily as a Forward. He stands at 181cm tall and weighs 66kg. His preferred foot is Right.

In the German Regionalliga 2025-2026 season, L. Demaj scored 9 goals and provided 0 assists across 19 appearances, averaging 0.5 goals per game with 0 shots attempted and 0 on target.