Multi-tenant inventory, POS, and e-commerce infrastructure.
CalQuick is a comprehensive commerce ecosystem designed to bridge the gap between offline retail and online e-commerce. It provides a multi-tenant platform where business owners can manage inventory across multiple warehouses, process orders via a high-performance POS, and sync everything with a customizable storefront.
To build a 'single source of truth' for retail businesses in Bangladesh, integrating 14+ local courier partners and smart fraud detection to minimize return rates and maximize operational efficiency.
Implemented a modular micro-service architecture including a dedicated fraud checker, a theme deployment engine, and a secure storage layer. Leveraged NestJS for the backend and Next.js for the multi-role dashboard (Admin, Merchant, Employee).
Successfully integrated 14+ courier APIs (Pathao, Steadfast, etc.) and achieved sub-second order processing times. The platform currently supports multi-tenant isolation with full GDPR-compliant data segregation.