I develop custom solutions for a content publishing platform called "EE". My work entails plugins, extensions and modules as well as Generally Good Advice™ on how to use EE for high performing and extendable sites and services. I focus on PHP and MySQL, otherwise known as backend.

PS. With regards to this: http://newism.com.au/blog/post/113/expressionengine-addonscom-is-now-ee-garagecom/, I have written consent from Rick Ellis to use the name ExpressionEngineer. I am in no way affiliated with Ellislabs, but they have kindly allowed me to use this name.