Hi,
I had a look at your site and the removal of the "hacks" will be trivial - I assume there is some simple script-based injection attack going on. What I can see from the link, your site is basically a single script handling all pages, is that correct? Always hard to tell without seeing the source, but if it really programmed like this hardening it is not too complicated. If you can provide me with more information about the website's code, how it is hosted and what problems you had, I would appreciate that.
I'd be happy if you would consider me for your job; I have worked on various web projects before, mostly including PHP and MySQL, but also many other software stacks and programming languages. I am from Germany, so we need to factor in a time difference of about 8 to 11 hours in our communication depending on your location. If you have any questions, feel free to contact me.