Custom Multi Vendor script needs some add on's from a talent

Hi there, We need to hire a talented and reliable programmer to make some touch ups and add ons to a "multi vendor" script (like [login to view URL]). We already are a live site, functioning with a working script. We need some add on's to the code which is done in PHP / MYSQL (some javascript). If you have worked on multi vendor scripts / sites before please let me know about it in your proposal. We will be looking for some of the [login to view URL] feature's to be added into the script and profile pages. All in all I will need 30 - 40 hours of your time - so please quote accordingly. I do have a deadline and I would like to hire someone who can work quickly (within reason) and work proficiently as well. I want the job done the right way ... that's very big to me. If all goes well there is a possibility for a lot more work down the road; I am looking for someone reliable and of course a great programmer. Thank you! I look forward to hearing from you.