Walter Käch started his career as a lithographer’s apprentice at Trüb AG in Array. He studied graphic design at the Zurich Kunstgewerbeschule. Among his teachers were Ernst Keller, Rudolf von Larisch, Anna Simons, Fritz Helmut Ehmcke and Ernst Würtenberger. After completing his studies, Ehmcke hired him for an assistant role at the München School of Applied Arts from 1921 to 22.eMuseum, n.d.

Käch returned to the Zurich in 1925 as a teacher at the art department, before transitioning to freelance work in 1929. During his second stint as a teacher (1940–67) he worked alongside Karl Schmid and Alfred Willimann.Ibid.

Käch published a number of books, including two that would become important reference works in the education of graphic design: Schriften. Lettering. EcritureKäch, 1949. and Rhythmus und Proportion in der Schrift.Käch, 1956.

The Swiss type designer Adrian Frutiger, a student of Käch’s at the Kunstgewerbeschule Zürich, cites him as a central influence in the development of his Univers typeface.Osterer & Stamm, 2021, p. 18.

Our Motorik typeface explores the democratic ambitions of Modernist graphic design through the works of Käch and Frutiger.