We congratulate Andrés Goens for having successfully defended his PhD on April 30th, 2021. Andrés was the first researcher to join the CC Chair, back then in October 2014 (one of the first entries in this news feed). Andrés has been an incredible support for the team, helping shape the research of those that came after him (see all his collaborative work in his publication list). Today he defended his thesis on “Improving Model-based Software Synthesis: A Focus on Mathematical Structures”, virtually as it is common for these times, with participation of family, friends and colleagues alongside a jury composed of five university professors. We thank Prof. Andy D. Pimentel from the University of Amsterdam for acting as external reviewer. We wish Andrés the best of luck as he moves on with his career!