Magento Developer Wanted for Long Term Project

We are looking for a Magento developer who can work can work a handful of hours on our website each month. The website is in perfect shape and all we are looking to do is have some extensions installed and some minor changes to the site from time to time.
We will not rush you to do any of the work! This is really just a matter of maintaining our site as our long-term Magento developer is no longer available to us.
- Must be Magento certified and able to show this.
- Must use SVN as we have SVN set up.
- Must be able to demonstrate to us that you do things 100% in accordance with magento stndards (i.e. never touch the core files, never hack the code, etc.).