Update php/ mysql site

I need a php/ mysql programmer to add some code to the site: [login to view URL]$sitepreview/[login to view URL] 1. integrate paypal subscription 2. promocode to set listing expiration date on jobseeker, and employer signup (and upgrade listing pages) 3. create a way for people to contact the employers or job seekers from the posting pages (except private jobseeker postings) 5. simple posting area for paid employers and jobseekers 6. if employer or jobseeker is logged in, allow them to browse store portion of website