He is on the books of Defensores de Belgrano and wears shirt number 9. His main role on the pitch is Forward. He measures 185cm in height and weighs 80kg. His estimated market valuation currently stands at 125K .

His latest transfer saw him join Instituto de Córdoba from Defensores de Belgrano via Loan on 2026-12-31.

During the ARG Primera Nacional 2026 campaign, J. Dellarossa made 2 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.