CTO of Technologeeks.com, and has been a trainer and consultant in the operating system space for more than 15 years.
Author of Mac OS X and iOS Internals (Wiley, 2012), which is slated for release in a 2nd, updated edition soon. Author of “Android Internals: A confectioner’s cookbook” which was released back in October 2014.
Taught classes and assisted developers and architects around the world in customizing Android, working around iOS limitations and optimizing performance in mobile environments. Professional clients include Intel, EMC, VMware and others. Taught academically: two semesters of Mobile Architecture Internals for Harvard University.