Multi-vendor eCommerce & Auction Platform

Industrial.com.bd is a comprehensive trade platform that goes beyond standard eCommerce. It integrates a multi-vendor marketplace with a sophisticated auction engine, customer-to-customer classified ads, and a multi-level affiliate system. The project involved building a highly scalable Laravel API (V2) to power the glassmorphic Flutter mobile applications, while maintaining a feature-rich web experience for both consumers and sellers.

The challenge

The main technical hurdle was consolidating diverse business models—Standard Retail, Wholesale, Bidding, and Classifieds—into a single synchronized inventory and notification system. We also had to ensure seamless payment flows across both local Bangladeshi gateways (Nagad, bKash) and international providers (Stripe, PayPal) with automated reconciliation.

How I approached it

• →API First Architecture: Designed a clean, versioned REST API using Laravel Sanctum and JWT for secure, stateless communication with the Flutter mobile clients.
• →Auction Engine: Built a real-time bidding module with automated winner selection, bid tracking, and instant notifications for outbid status.
• →Multi-Payment Hub: Engineered a unified payment service class that abstracts 10+ gateways, handling callbacks and webhooks for instant order status updates.
• →Advanced Inventory: Implemented a multi-variant attribute system with support for wholesale price levels, ensuring accurate stock tracking across all product types.