Custom CMS Truck Marketplace Website

I’m building a pan-European marketplace for new and second-hand trucks and commercial vehicles and I need the complete package: front-end site, back-office CMS, and seamless data flow between them. The CMS must be custom (no WordPress or Joomla) and structured with additional languages and markets... (Budget: €200 - €500 EUR, Jobs: Backend Development, CMS, Data Integration, Frontend Development, HTML, Inventory Management, PHP, Web Development, Website Design, WordPress)