Complete Penny Auction Platform

I need a full-featured penny auction website built from the ground up. Core functionality must include a secure user area with email + password login, social media sign-ins, and an optional two-factor step so bidders feel confident storing card details and credits on the site... (Budget: $250 - $750 CAD, Jobs: API, Frontend Development, HTML, Payment Gateway Integration, PayPal API, PHP, Web Development, Website Design)