I have been developing since I was 9 years old, but as a professional I started my career working for a hospital's IT Department, following then development work for a fortune 25 corporation, a school financial management software company, another fortune 10 company, for my own consulting business, and for agencies of state government.
I have wrote a wide variety of software, ranging from Windows to Linux/OpenBSD, from kernel space (drivers) to user space, from console to GUI to Web. Any kind of software from shrink wrap status to customized, security to automation. I have even assisted Microsoft in tracking down bugs within the Windows operating system.
The software I have written still is running at full steam, even within the fortune 25 and even smaller companies. I now provide consultant work to some of them.