Treichel progressed through the youth academies of TuRa 88 Duisburg and SC Bayer 05 Uerdingen before joining Schalke 04's academy in 2016.[1][2] He progressed through Schalke's ranks and made his first appearances for the reserve team in the 2022–23Regionalliga West season, featuring in goal 15 times over a span of one and a half years.[3]
After the 2023–24 season, Treichel's contract with Schalke expired, making him a free agent. He subsequently joined Dutch Eerste Divisie club Roda JC, signing a two-year contract with an option for an additional year.[4] At the start of the season, he served as a backup goalkeeper behind Koen Bucker. Treichel made his debut on the fifth matchday of the season, coming on as a 14th-minute substitute due to an injury to Bucker in a game against Emmen.[5] Despite Mike te Wierik scoring for Emmen, Thibo Baeten's brace and a goal from Tiago Çukur secured a 3–1 win for Roda. With Bucker sidelined for several months, Treichel made his first start against Cambuur, where he saved a penalty from Mark Diemers, contributing to a 0–0 draw.[6]
