Gründer grew up in Pyrbaum and Neumarkt in der Oberpfalz, where he graduated from Ostendorfer-Gymnasium in 2016.
Initially, Gründer worked as a student assistant to Lukas Köhler, and as an account manager at a PR agency during his studies.
[5] In the 2021 German federal election, Gründer contested Amberg and ranked 15th on the state list and initially failed to make it into the Bundestag.
He was the first successor on the FDP state list and therefore replaced Thomas Sattelberger in the Bundestag on 2 August 2022.
[8] In addition to his work in the Bundestag, Gründer is currently deputy district chairman of the FDP Neumarkt.