He is on the books of Bayer Leverkusen Women and wears shirt number 18. At international level, he features for Germany Women U23. His main role on the pitch is Defender.

Across the German Frauen Bundesliga 2025-2026, Julia Mickenhagen appeared in 19 matches and averaged 1.5 tackles, 0.4 interceptions, 1.1 clearances, and 0.4 blocked shots per game.