Multi-vendor eCommerce & Auction Platform

Advanced Multi-vendor eCommerce & Auction Platform

EcommerceMarketplaceLaravelFlutterAPIAuction

Multi-vendor eCommerce & Auction Platform — featured

Multi-vendor eCommerce & Auction Platform — screenshot 1

Multi-vendor eCommerce & Auction Platform — screenshot 2

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CLIENT

Industrial.com.bd

ROLE

Lead Full-stack & API Architect - Engineered the multi-vendor backend, V2 REST API, and integrated 10+ payment gateways.

DURATION

1.5 months

YEAR

2024

/ OVERVIEW

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.

/ OUTCOME

What it did in the world

Unified Platform

Successfully launched a synchronized web and mobile ecosystem handling thousands of products and active bidders.

Real-time Bidding

The auction platform provides a lag-free experience, driving higher engagement for high-value industrial assets.

Mobile Excellence

The Flutter app achieved high performance scores with an optimistic UI and smooth transitions across critical checkout flows.

Payment Automation

Reduced administrative overhead by 40% through automated payment verification and vendor payout scheduling.

/ STACK