Custom Multi-Channel Inventory Software

I sell across Amazon and Shopify and keep stock in several separate locations, so I’m ready to replace the spreadsheets and mismatched apps with a single, purpose-built inventory management platform.

Core scope
The software must pull products, orders and stock levels from both Amazon (SP-API) and Shopify, then push automated stock updates back to each channel in near real time. I also need a clear sales-analytics dashboard so I can spot fast movers, slow sellers and margin trends without exporting CSVs. Because my units sit in more than one warehouse, the system has to allocate stock by location, let me transfer it internally and prevent overselling by combining totals where appropriate.

Reporting
Daily and weekly snapshots should be generated automatically, while a flexible report builder lets me choose custom date ranges, SKUs or warehouses on demand.

Deliverables
• Fully functional web app (responsive UI)
• Modules for multi-warehouse management, sales analytics and customizable reporting
• Source code in a private repo plus a brief hand-over call or video walkthrough

I’m happy to hear your recommendations. Please outline relevant experience with this type of software, proposed timeline and any questions you need answered before starting.