Sebastian Kaiser has been worked as a dramaturg, curator, teacher in Universities and art schools and an author of essays and film documentaries. From 2014 to 2019, he obtained the Lectureships at Nanjing University (China), Freie Universität Berlin (Germany), University of Music and Theatre Leipzig (Germany), Oslo National Academy of the Arts (Norway), and got the title of Visiting Scholar&Lectures at the Martin Segal Center, City University of New York (USA).

During 2008 to 2017, he worked as a Dramaturg at the theatre Volksbühne am Rosa-Luxem- burg-Platz (Berlin, Germany), creating more than 30 theatrical works with many artists, including: Kean (by Alexandre Dumas, 2008), To Moscow, To Moscow (by Anton Chekhov, 2010), its premiere in Moscow at Chekhov-Festival and guest performances in Vienna, Paris, Zagreb, Belgrade. Merchant of Berlin (by Walter Mehring, 2010), Lehrstück (by Berthold Brecht, 2010), The Gambler (by Fyodor Dostoevsky, 2011) and Landlady (by Fyodor Dostoevsky, 2013) etc.

In 2006 and 2010, he was appointed as Artistic Director of the International Media Art and Performance Festival “Balaklava – Odyssey” which took place in former military objects in Balaklava and Sevastopol (Crimea). In 2019, he made conceptional and dramaturgical cooperation with Chen Minghao staging of the play From Morn to Midnight written by Georg Kaiser in a huge convention centre in Wuzhen, China. In 2018, he joined the theatre production Teahouse (written by Lao She, directed by Meng Jinghui) as a Dramaturge. The premiere of the play was in Wuzhen, China.

Sebastian Kaiser was employed as a foreign expert since Mar. 2020, teaching professional courses on Dramaturgy and Theatre Application at the Theatre Literature Department.