Enterprise Cloud POS & Inventory System
High-throughput cloud point-of-sale with offline barcode scanning and multi-branch inventory synchronization.
Project Overview & Background
A mission-critical web application designed for multi-branch retail operations with offline SQLite sync, instant receipt printing, and live sales telemetry.
The Technical Challenge
Ensuring zero cashier downtime during internet outages while reconciling branch inventories automatically upon reconnection.
Design Approach & User Experience
Implemented local-first IndexedDB persistence with two-way conflict-free replicated data types (CRDTs).
High-contrast touch-optimized interface with prominent numerical keypad and tactile feedback.
Full-Stack Engineering & Architecture
Built using Next.js 15 App Router and service worker background sync API.
Core Architectural Capabilities
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