Preface This volume contains the proceedings of the Doctoral Symposium at the 5th International Conference on Software Language Engineering, 25th of September 2012, hosted by the Faculty of Information Science of the Technical University of Dresden, Germany. Previous editions were held in Braga, Portugal (2011), Eindhoven, Netherlands (2010), Colorado, USA (2009) and Toulouse, France (2008). The International Conference on Software Language Engineering (SLE) aims to bring together the different sub-communities of the software-language- engineering community to foster cross-fertilisation and to strengthen research overall. Within this context the Doctoral Symposium at SLE 2012 contributes towards these goals by providing a forum for both early and late-stage PhD students to present their research and get detailed feedback and advice from researchers both in and out of their particular research area. The Program Committee of the Doctoral Symposium at SLE 2012 received 10 submissions. We would like to thank all authors for submitting their papers. Each paper was reviewed by at least three reviewers. Based on the review reports and intensive discussions conducted electronically, the Program Committee se- lected 8 regular papers.We would like to thank the Program Committee members and all reviewers for their efforts in the selection process. In addition to contributed papers, the conference program includes a keynote. We are grateful to Dr. Steffen Greiffenberg, University of Cottbus, Germany, for accepting our invitation to address the symposium. We also would like to thank the members of the Steering Committee, the Organising Committee as well as all the other people whose efforts contributed to make the symposium a success. The support of our industrial sponsors is essential for SLE 2012. We cordially express our gratitude to (in alphabetical order) ACM SIGPLAN, ANECON GmbH, DevBoost GmbH, Elsevier B.V., ISX Software GmbH and Springer LNCS. Furthermore, we thank our academic sponsors, European Association for Programming Languages and Systems and Technical University of Dresden, Germany and the Software Technology Group at the Technical University of Dresden, Germany. Ulrich W. Eisenecker Christian Bucholdt Co-Chair Co-Chair University of Leipzig, Germany Plauen, Germany 2