Alıcıdan

On classic marketplaces buyers have to search through endless listings, and sellers compete only on visibility. There is no simple way for a buyer to say “this is what I need, at this budget” and let sellers come to them — safely.

Alıcıdan flips the flow: buyers publish a request, sellers send offers, and the buyer picks the best one. Payments are held in escrow via Papara until the buyer confirms delivery, which removes the trust problem for both sides.

• React single-page frontend deployed on Vercel
• Node.js / Express REST API (40+ endpoints) deployed on Railway
• PostgreSQL as the primary relational database
• Papara integration for escrow-based payments

• 40+ REST API endpoints
• Secure payments with escrow
• Offer system between buyers and sellers
• 8% seller-commission business model

• Designing a two-sided marketplace where trust is part of the product
• Modelling payment states (held, released, refunded) safely
• Splitting frontend and API hosting across Vercel and Railway