I have more than thirty years of programming experience in many programming languages and all aspects of software development, including designing and writing my most visible project, the Armadillo Software Protection System (renamed by its purchaser as SoftwarePassport). Other projects have included desktop applications (primarily in C++) for Windows, Mac OS X, and Linux; useful library code in C and C++; mobile applications (in Java and C) for Android; secure server applications; and various others. Unfortunately most of them were for other companies or individual developers, so I can't post many of them in my portfolio here. I'm also skilled with mathematical coding (including large-integer math in both C and C++), encryption, compression, server applications (both stand-alone and CGI-based), 2D/3D image processing, and refactoring large projects, and I have excellent English communications skills, both in writing and in person.