He currently plays for UC Dublin, wearing the number 5 shirt. He plays primarily as a Defender.

His most recent move was a from Shamrock Rovers to UC Dublin on 2025-01-01.

Throughout the Ireland First Division 2026, Carl Lennox featured in 3 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.