Actress Shannon Staller was born in Zurich, Switzerland, to Joachim, an electrical engineer, and Edith, a business woman. She has one brother, Justin. She was educated at Gymnase de la Cite, Lausanne before going to University in Zurich.

When Shannon was four years old she began commercial modelling. Acting roles followed in theater, and she made her screen debut in Shiner (2016). In 2017 she worked with director Robert Schwentke in The Captain.