He is on the books of RFC de Liege and wears shirt number 25. His main role on the pitch is Defender. His stronger foot is Left. His estimated market valuation currently stands at 250K €.

His latest transfer saw him join RFC de Liege from KAS Eupen via Free on 2016-02-01.

Across the Belgian Challenger Pro League 2025-2026, J.D'Ostillio appeared in 21 matches and averaged 1.5 tackles, 1 interceptions, 2.8 clearances, and 0 blocked shots per game.