Former GTK+ hacker, specialized in GtkTreeView and friends (basically almost everything that has to do with GtkTreeModels). I also maintained the OSX port of GTK+. I wrote the CoreText backend for Pango.
These days I like to hack on GIMP when I have spare time. The GIMP people keep me busy fixing their macOS build.
During the day I work as Assistant Professor at Leiden University, The Netherlands.