My name is Jonathan Levin, and I'm the author of Wiley's new book on OS X and iOS internals. Kernel architectures have always piqued my curiosity, and after starting in Linux and moving to Windows, it was only natural I discover Mac OS. Since there were no updated books on the subject, I decided to write one myself!

By day, I am a kernel/networking consultant and trainer, designing and delivering various courses with colleagues at Technologeeks. I also try and squeeze time for helping as a Teaching Fellow at Harvard University.