Magento expert needed

hello. i have a magento store that requires a magento expert to make some functionality changes to the admin part of the system. i will post the specific details to anyone who contacts me with their past successes working with magento. in your bid, be sure to post what you did with magento - DON'T JUST TELL ME YOU HAVE WORKED WITH MAGENTO - give me examples of what you did. for example: " I was able to resolve issues with USPS shipping for international deliveries". etc the system itself if up and running quite well, however I need some changes done to smooth the process for administration.