Warehouse & Order Fulfillment Platform (B2B)
Overview
The client needed a centralized warehouse and order fulfillment system to manage inventory, multi-warehouse operations, and high-volume eCommerce orders while eliminating manual processing and shipping errors.
Client Goals
- Automated order ingestion from major eCommerce platforms
- Reduced manual shipping and fulfillment errors
- Centralized control of multi-warehouse operations
- Scalable system capable of handling high order volumes
Core features
- Inventory, SKU, and purchase order management
- Receiving, picking, packing, shipping, and tracking workflows
- Multi-warehouse support with locations, bins, shelves, and pallets
- Role-based access (admin, client, warehouse staff)
- Real-time dashboards, reports, and email notifications
- Order lookup, history, returns, and packing slips
Solution
- Designed and developed a custom B2B warehouse & order fulfillment platform from scratch, enabling end-to-end control over inventory, orders, shipping, and billing from a single dashboard.
- 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
