353936 freelancer clone modifications

I have website, which has some issues whic needed sorted out, also i want some extra functions in. Its basicly a clone of scriptlance site, but mises some functions, or functions are in the language files, but not on the site. Like certfied programmers, i not have, but its in lang. Payment options is only paypal, i need integration of an existing API i have. Site is in dutch, but i can make it in english in 10 seconds, so you understand where i am talking about