He currently plays for Arka Gdynia, wearing the number 7 shirt. He plays primarily as a Midfield. His preferred foot is Left. His current market value is estimated at 1.5M €.

His most recent move was a Loan from Sokol Kleczew to Arka Gdynia on 2026-01-22.

Across 4 appearances in the PKO Bank Polski EKSTRAKLASA 2025-2026, Oskar Kubiak registered 1 goals and 0 assists, while completing 1 key passes out of 57 total passes with a passing accuracy of 10.