Komische Oper Berlin
In 1998, Poska founded the Estonian choir "Nimeta" ('No Name'). From 2006 to 2011, she conducted the Cappella Academica symphony orchestra of the Humboldt University of Berlin. Following engagements at the Komische Oper Berlin in the 2010-2011 season ("La Traviata", "La Périchole"), she served as "Erste Kapellmeisterin" with the company from 2012 to 2016.