I have been Project and Research Assistant at the Research Institute for Softwaretechnology (RIST++) since 1993 and have got a position as Assistant Professor at the Department of Computer Science on June, 1st, 1997. From October 2000 onwards I have been Associate Professor with tenure for Computer Science at the Department for Scientific Computing, Salzburg University. Additionally I am lecturer at the Carinthia Tech Institute (Telematics and Networking) since 1999.