Wrote device drivers for Linux.
Implemented POSIX-compliant filesytem for WindowsNT POSIX subsystem.
Implemented POSIX-compliant IPC suite for WindowsNT POSIX subsystem.
Implemented POSIX-compliant math libraries for WindowsNT POSIX-complient user environment.
Implemented POS application using Tcl/TK and Postgress.
Various UNIX scripting solutions in a wide range of environments.
Implementation of various library-level POSIX-compliant interfaces for a variety of operating systems.
Developed/maintained core engine of an enterprise-class revision control system.
Implemented complicated mathematical modeling software.