Warehouse Management System – Inventory Control, Order Accuracy & Real-Time Tracking
Overview
Built a scalable Warehouse Management System to automate inventory control, reduce order errors, and provide real-time visibility across multiple warehouses for a mid-sized logistics company.
Client Goals
- Replace manual stock counts with automated tracking
- Improve order fulfillment accuracy and speed
- Provide central reporting and multi-warehouse visibility
Key Challenges
- Inconsistent SKU tracking across locations
- Manual reconciliation causing delays and inventory shrinkage
- Need for mobile scanning and offline operation in some warehouse zones
- Integration with existing ERP and shipping providers
Solution
- Developed a modular WMS with core modules: Inventory, Receiving, Picking & Packing, Returns, and Reporting.
- Implemented mobile scanning apps for barcode/RFID-based workflows with offline sync.
- Created rule-based order allocation for multi-warehouse fulfillment.
- Built integrations with the client’s ERP, carrier APIs (UPS/Shippo), and accounting system.
- Added role-based dashboards for warehouse managers, floor supervisors, and admin.
Results
- Order accuracy improved from 87% to 99.6% within 3 months
- Picking efficiency increased by 45%
- Inventory reconciliation time reduced by 80%
- Reduced stockouts and shrinkage, improving inventory turnover
Tech Stack
- Frontend: React + Redux
- Mobile: React Native (Android-focused scanning), offline sync logic
- Backend: Node.js + Express
- Database: PostgreSQL with Redis caching
- Integrations: REST APIs, Webhooks
- Hosting: AWS (EC2, RDS, S3), CI/CD with GitHub Actions
Custom Web Application Development
API Development & Integration