My name is Divino Cesar Soares Lucas or just John Tortugo for short. I received a bachelor degree in Computer Science (2010) from the Catholic University of Goias (PUC-GO) and a Masters (2012) and PhD (2017) in Computer Science from University of Campinas (Unicamp). My main areas of interest are Programming Languages and Compilers but I'm also interested in Computer Architecture and Parallel Programming techniques.

Currently I'm a Virtual Machine Engineer at Microsoft where I research and implement techniques to make the Java Virtual Machine (OpenJDK, GRAAL) more efficient and performant.

My free time is spent most with my family and my hobbies. I love to go outside for a hike or a run with my dog. I also have some hobbies like woodworking and fish keeping.