Dr. Christopher Swenson is an architect and principal engineer at Twilio, and is enthusiastic about programming, software engineering, mathematics, writing, and open source. Previously, Christopher worked as an engineer at Google and Simple, and as a code breaker, computer scientist, mathematician, and supercomputer programmer for the US Government. Christopher holds a Ph.D in computer science from The University of Tulsa and wrote the book Modern Cryptanalysis. Christopher is maintains a moderately popular open source sorting library, and is also a core contributor to the BeeWare project.