After getting her master's degree in Marketing and Management (Diplom-BWL) in Hamburg and Bordeaux, Hanna worked for several German publishing houses and for Online Marketing companies in Mountain View and Vienna. She co-founded Serienjunkies.de in 2008 in Berlin and transformed the online fan site into one of the biggest news sites for TV Shows in the German market. Hanna conducted more than 300 interviews over the years with talents and CEOs of the Streamers including Reed Hastings (Netflix), Dr. Christoph Schneider (prime video Germany) and Jeffrey Hirsch (Starz) and was invited to the Apple TV+-Keynote in Cupertino in 2019. Hanna produced more than 600 episodes of the Serienjunkies-Podcast, which started in March 2013 and exceeded 1 million downloads in 2022.