At the international level, he represents Scotland U17. He plays primarily as a Defender. His preferred foot is Right.

His most recent move was a Loan from Queen of South to Saint Mirren on 2026-05-30.

Throughout the Scottish Premiership 2024-2025, Cellum Penman featured in 12 matches, averaging 0.1 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.