A B2B e-commerce platform connecting Toyota spare-parts wholesalers with retail shops. Retailers search hundreds of parts at once by uploading an Excel file; admins, wholesalers and shops each get their own panel.
A retail shop does not order one part at a time — it arrives with a list of hundreds of part numbers and wants prices and availability for all of them. And a marketplace with wholesalers, shops and admins needs each side to see exactly its own world, nothing more.
I built it as a Turborepo monorepo — Next.js frontend, NestJS backend on PostgreSQL — so frontend and backend share the same TypeScript interfaces and cannot drift apart. Bulk search works by uploading an Excel file against a downloadable template. Authentication uses JWT in httpOnly cookies, with ownership guards on every resource.
A complete three-sided marketplace with the bulk workflows that B2B parts trading actually needs.
The platform is live at toyo228.com, moving parts trading from phone-and-list workflows to a structured online marketplace.
Tell me what you are building and I will come back with a recommended scope, timeline and price.