He made his screen debut in 2005 in two commercials directed by Caroline Link. He gained wider recognition through his role as Nerv in the successful film series "The Wild Soccer Bunch" (parts 3-5). In the remake of Max von der Grün's young adult novel "The Crocodiles," Reimann played Hannes, as he did in the two sequels, "The Crocodiles 2" (2010) and "The Crocodiles 3" (2011).