His first role in Catherine Breillat's film Last Summer earned him a César nomination for Best Male Revelation in 2024.
Coming from a family of comedians (he was Jérôme Kircher and Irene Jacob and for elder brother Paul Kircher), Samuel Kircher was primarily passionate about contemporary dance. He joined a specialized class at the Collège Yvonne-le-Tac, in the 18th arrondissement of Paris2.
While not acting, Samuel found his first film role in Catherine Breillat's Last Summer, a drama in a 17-year-old boy who had an affair with his father's companion.