Aaron Quigley is the Program Chair for the IBM CAS Software and Systems Engineering Symposium 2007 (Dublin Ireland). This is the third annual IBM Dublin CAS research symposia organised as a multi-track single day event on October 24th 2007. This symposium is organised in association with CASCON 2007 the 17th Annual International Conference on Computer Science and Software Engineering (http://www.ibm.com/ibm/cas/cascon/dublin_track.shtml) and in cooperation with Lero, the Irish Software Engineering Research Center (http://www.lero.ie).