Hi,
Am professional web developer , I have experience in Web site building with Signup process , Validating, Authentication process. And i was done SSO ( Single sign on ) to make user to access his subdomains with Single login , So i have experience building website with more secure and very efficient and user friendly . And also i was done Third party gateway payment integrations like Paypal, Google Checkout, Amazon gateway payments , So i have well experience in payment process. If you give chance i will Surely finish your projects in right time. My known skills are Php, MySql, Ajax, XML, Javascript, JQuery, Css, Bootstrap UI. Awaiting for your response.