Nina Steils was born in Traunstein in 1992 and grew up in Bergen, Upper Bavaria. At the age of 15, she transferred to the AMA vocational school for musicals in Munich and worked for the Grand Hotel production at the Gärtnerplatz theatre in Munich after graduating. In 2013, she began studying acting at the Thomas Bernhard Institut-Mozarteum Salzburg. During her studies, she worked at the Landestheater Salzburg, the Residenztheater Munich, the Schauspielhaus Düsseldorf and the Erlangen Theatre. After graduating, she had a permanent engagement at the Volkstheater Munich from 2017 - 2024, where she worked with Claudia Bossard, among others. She has been a member of the ensemble at Schauspielhaus Bochum since the 2024/2025 season.