Bulk Product Uploads to Amazon Seller Central
Zero training. Just APIs, spreadsheets, and thousands of listings.
📦 Amazon Seller Central Integration
When I was asked to get thousands of hardware SKUs listed on Amazon — I didn’t get formal training or hand-holding. I dove straight into Amazon’s documentation and reverse-engineered both their spreadsheet templates and their MWS (Marketplace Web Services) API.
I built a hybrid system that could:
- 📤 Upload flat file templates with dynamic fields using Amazon's category-specific Excel sheets
- 🔁 Update existing listings with inventory and price changes through batch feed submissions
- 📡 Register and monitor feed submissions via Amazon’s MWS APIs
- 📊 Parse feed results and automate error retries
🔧 Stack
- C# for generating listing files and integrating with MWS
- S3 buckets for storing and referencing feed files
- SQL Server as the product source of truth
The end result was a scalable automation system that could push or update thousands of listings in minutes, supporting multiple vendors. It saved countless hours of manual uploads and was entirely self-directed from day one.