Preface The Doctoral Symposium of the 19th ACM/IEEE International Conference on Model Driven Engineering Languages and Systems (MoDELS) took place in Saint Malo, France on October 2, 2016. It received 10 submissions, all of which were reviewed by at least three members of the program committee. This committee included senior members of the MoDELS community as well as authors of papers presented in the MoDELS Doctoral Symposium in 2015. Out of the 10 submissions, 7 were accepted and presented during the symposium. Each author was allocated a 20-minute slot to present the current status of their research project, followed by 25 minutes of discussion. The program committee consisted of the following members: • Dimitris Kolovos, University of York, UK • Jeff Gray, University of Alabama, USA • Nelly Bencomo, Aston University, UK • Jean-Michel Bruel, IRIT, France • Matthias Kowal, TU Braunschweig, Germany • Juergen Dingel, Queen’s University, Canada • Jocelyn Simmonds, Universidad de Chile, Chile • Domenico Bianculli, University of Luxembourg, Luxembourg • Jordi Cabot, ICREA, Spain • Amal Khalil, Queen’s University, Canada • Dániel Varró, Budapest University of Technology and Economics, Hungary The day concluded with an expert panel moderated by the chairs. The members of the panel were: • Dimitris Kolovos, University of York, UK • Jeff Gray, University of Alabama, USA • Jean-Michel Bruel, IRIT, France • Juergen Dingel, Queen’s University, Canada • Dániel Varró, Budapest University of Technology and Economics, Hungary We thank the authors for their contributions and the Program Committee and panelists for their insightful feedback. Doctoral Symposium Chairs, Shiva Nejati Rick Salay University of Luxembourg, Luxembourg University of Toronto, Canada November 15, 2016