Marlo Siech is a 29-year-old professional football player from GER. He currently plays for SV Atlas Delmenhorst, wearing the number 30 shirt. He plays primarily as a Defender. His preferred foot is Both.

His most recent move was a from Rotenburger SV to SV Atlas Delmenhorst on 2023-06-30.

Throughout the DFB Pokal 2025-2026, Marlo Siech featured in 1 matches, averaging 0 tackles, 1 interceptions, and 5 clearances per game, while blocking 0 shots per game.