Software Engineering · In-House
Marketplace API Middleware & Integrations
Brands needing custom inventory, order, and pricing synchronization between internal ERPs and marketplaces.
Fixed Price BandCustom quote
Delivery Timeline3 to 6 weeks
Core Technology Stack
Amazon SP-APIWalmart Marketplace APITikTok Shop APIeBay Trading APINode.js
Architecture & Features
What Is Engineered & Shipped
Amazon Selling Partner API (SP-API) order and inventory automation
Walmart Marketplace API real-time order ingest and tracking sync
TikTok Shop Seller API integration for automatic order fulfillment dispatch
Centralized webhook router with error handling and retry queues
Automated inventory buffer rules to prevent cross-channel overselling
Engineering Workflow
4-Phase Development Sprint
1
API Token Provisioning & Scope Mapping (Week 1)
2
Middleware Development & Rate-Limit Handling (Week 2–4)
3
Sandbox Order & Inventory End-to-End Testing (Week 5)
4
Production Deployment with Real-Time Logging (Week 6)
Technical Questions
Frequently Asked Questions
How do you handle API rate limits across Amazon and Walmart?
We implement resilient exponential backoff retry algorithms, token bucket throttling, and event-driven queues to prevent throttling errors.
FTC Compliance & Typicality Disclaimer: Results shown are from specific client accounts and are not typical. Marketplace outcomes depend on capital, category, competition, inventory availability, and factors outside our control. We operate client-owned accounts and do not guarantee specific revenue or profit figures.