Sean Dillon started programming a Commodore Vic 20 back in 1980 at the age of 9. As Sean grew, so did his love for programming. He began his professional programming career in the United States Marine Corps, shortly after returning from the Gulf War. Sean is now a principal technologist working for Oracle Corporation based in Reston, Virginia. He has 10 years of experience specializing in database architecture, database tuning, web application development, XML, and web services technologies.