Accept Paypal payments and update some MySQL with PHP

I need a PHP/MySQL whizz (vTiger guru even better) to help with developing a custom coded code that takes payments with Paypal API and updates some MySQL/send an email after. I have provided brief and flowchart of code process (even necessary MySQL queries to edit/add). This should be straightforward for a PHP/MySQL expert. Send me PM and I'll send you brief/flowchart so you can make informed decision. Also give me at least 3 PHP/MySQL custom applications/code. Web design is not needed, just code, but should be friendly for a web designer to do custom HTML later. Project will be awarded based on criteria (in order of priority) Any PHP/MySQL qualifications Previous work on this site in this area (if available) 3 code showcase Time Cost