[1][2] Since December 2024 he has been head of the state chancellery [de] and Minister for Federal and European Affairs, Sport and Voluntary Work in the Voigt cabinet.

After graduating from the Dr. Konrad Duden Gymnasium [de] in Schleiz in 2003, Gruhner completed his military service with the 722nd Pioneer Battalion in Gerafrom 2003 to 2004.

In addition, he completed a degree at the Quadriga Hochschule Berlin [de] in 2016/17 and graduated with a Master of Business Administration (MBA).

From January 2020 to 2022, Gruhner worked as head of the staff unit "Future of the People's Party/Federal-State Coordination/International Party Relations" in the federal office of the CDU.

[9] Since December 2024 he has been head of the state chancellery [de] and Minister for Federal and European Affairs, Sport and Voluntary Work in the Voigt cabinet.