I would suggest some changes to your resume, mainly to bring out your programming skills and expertise and then to highlight that you have significant work experience with system engineering so you are not a neophyte and can actually add something "else" to your team.

Starting with the Summary, I would change from "Expert Systems Engineer with a passion for programming seeking an entry level development position in a fast paced environment that will leverage my existing self-taught skills and provide and opporunity to grow as a developer." to

"Passinate programmer with a history of custom software development and systems engineering ...etc"

Good luck!