Miullen is a professional footballer from BRA and is currently 29 years old. He is on the books of Hibernians FC and wears shirt number 9. His main role on the pitch is Forward. His estimated market valuation currently stands at 300K €.

His latest transfer saw him join Hibernians FC from Azuriz FC via on 2024-08-07.

During the Malta Premier League 2025-2026 campaign, Miullen made 12 appearances, scoring 2 goals and adding 0 assists. He averaged 0.2 goals per match from 0 shots, with 0 on target.