He currently plays for RFC Seraing, wearing the number 26 shirt. He plays primarily as a Forward. His current market value is estimated at 150K €.

His most recent move was a from Union Saint-Gilloise II to RFC Seraing on 2025-08-07.

In the Belgian Second Division 2025-2026 season, Harrison Ondo-Eyi scored 1 goals and provided 0 assists across 10 appearances, averaging 0.1 goals per game with 17 shots attempted and 6 on target.