He currently plays for Breidablik Women, wearing the number 19 shirt. At the international level, he represents Iceland U23(w). He plays primarily as a Defender.

Throughout the Iceland Besta-deild kvenna 2025, Joostdottir lif bemmel van featured in 15 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.