Dashboard for Amazon and Flipkart

We are seeking a skilled freelancer to develop a dashboard that integrates with our Amazon and Flipkart seller accounts using official APIs. The dashboard should provide live, SKU-level visibility, enabling us to monitor and manage our inventory effectively. The ideal candidate will have experience in API integration and dashboard creation, ensuring seamless data flow and user-friendly interface. We're an Indian fashion e-commerce brand (₹1.5 Cr+/month GMV) selling on Amazon, Flipkart, and Meesho. Scope (single contract, milestone-based): API integrations: Register and authenticate apps for Amazon SP-API and Flipkart Seller API against our seller accounts. Set up automated data pulls: FBA inventory (fulfillable/reserved/inbound), orders, returns, settlement/finance reports, and marketplace fees from both platforms. Data layer: Store everything in a structured database with scheduled syncs and basic data-quality checks. Dashboards: SKU-level and marketplace-wise views for FBA/channel stock, sales summaries (daily/weekly/monthly), return reports with return-rate by SKU, and profitability (revenue − fees − returns − COGS we provide). Tech stack: Open to your proposal — tell us what you'd build with and why. We care about maintainability, documentation, and clean handover more than any specific framework. We currently run on Google Sheets/Apps Script, so export-to-Sheets is a plus. You must have: Shipped at least one production project using Amazon SP-API (not just MWS, not just theory) — you'll be asked to describe it Hands-on experience with SP-API auth (LWA), rate limits, and the Reports/Finances/FBA Inventory APIs Worked with the Flipkart Seller API, or can demonstrate you can ramp on it fast Experience building dashboards/reporting tools with a database backend