[1] After his Abitur and a year of Social Service in Canada, he went on to study conducting from 2011 until 2015 at the University of Music Freiburg and later at the University of Music and Performing Arts Vienna with Lutz Koehler, Mark Stringer, Gerhard Markson, Scott Sandmeier and Massimiliano Matesic.
He furthermore assisted Sir Simon Rattle, François-Xavier Roth, Gianandrea Noseda, Robin Ticcitati, Fabio Luisi, and others.
[4] Between 2017 and 2019, Mildenberger had the position of assistant conductor to music director Emmanuel Krivine at the Orchestre National de France.
After winning the Donatella Flick LSO Conducting Competition 2018 he has been assistant conductor of the London Symphony Orchestra for more than two years.
Mildenberger has worked with the London Symphony Orchestra, Orchestre National de France, Tonhalle-Orchester Zürich, hr-Sinfonieorchester, SWR Symphonieorchester, NDR Radiophilharmonie, Konzerthausorchester Berlin, Deutsche Kammerphilharmonie Bremen, Filarmonica Teatro Regio Torino, Stuttgarter Philharmoniker, Bremer Philharmoniker, Nürnberger Philharmoniker, Folkwang Kammerorchester Essen, Ensemble Modern, Belgrade Philharmonic Orchestra, Musikkollegium Winterthur, Sinfonieorchester Basel, Nagoya Philharmonic Orchestra, Kansai Philharmonic Orchestra, St. Petersburg State Capella Symphony Orchestra, Orquestra de Cadaqués, Orquesta Sinfónica de Tenerife, Real Filharmonía de Galicia, Orchestre National des Pays de la Loire, Orchestre National de Lille, and others.