Oliver Sternagel began his professional career after studying business administration with a specialisation in tourism management as marketing manager of three U.S. Play Family Entertainment Centres and property manager of a multiplex cinema in Düsseldorf, before becoming operations manager and authorised signatory of TURM Erlebniscity in Oranienburg. After further positions as operations manager of the Fläming-Therme in Luckenwalde and the Bodensee-Therme in Überlingen, he has been managing director of Karlsruher Bädergesellschaft mbH with six adventure and indoor pools and four outdoor pools since 2009.