From 2009 to 2012, he was the curator of the Media Archaeological Fundus of Humboldt University Berlin. Beweeen 2012 and 2015, together with media artist Jan-Peter E.R. Sonntag, he directed and conducted the conceptual art project apparatus operandi. Between 2015 and 2021, he held different positions and teaching assignments at Humboldt university Berlin, Carl-von-Ossietzky university Oldenburg, University of Art and Design Linz; From 2021 to 2024, he was a research associate at the Kustodie (office for academic heritage and university collections) at Otto-von-Guericke university Magdeburg. Sebastian joined the University of Luxembourg in 2024.