Prior to Matrix, Kyle developed platform software for embedded devices, including various wireless phones and the Apple iPod. He also led the graphical user interface group at Jeppesen Dataplan (now a part of Boeing), developed flight planning software, and created system software at IBM in the early 1990s. For the past several years, Kyle has taught object-oriented programming using C++ at the University of California, Santa Cruz Extension, and has worked with C++ since the beginning of its widespread use in 1990. Kyle is the author of Mastering Algorithms with C, also published by O'Reilly and Associates.