I need a lightweight, lightning-fast web panel that lets merchants push and manage their catalog across Turkey’s leading marketplaces—Trendyol, Hepsiburada, N11, Pazarama, Çiçeksepeti, PTT AVM and Amazon TR—from a single screen. Core workflow • Send both variant and simple products to any of the above channels. • Map categories, attributes and brands once, then reuse the mapping for future uploads. • Override prices per marketplace and keep stock & price in sync automatically. • Pull orders back into the panel in real time so the seller works from one queue. • Bulk send or update thousands of SKUs without time-outs. Platform connectors The panel must read and write data through the official APIs of WooCommerce, Opencart, Shopify and Magento so a merchant’s own store stays the source of truth. Operational must-haves • Dashboard with sales, stock and order KPIs. • Multi-user management with role permissions. • Real-time notifications (stock lows, order failures, mapping errors). • License system that activates features by package level. • Optional e-invoice flow and accounting integration for local compliance. Tech expectations A clean front-end (React, Vue or similar is fine) backed by a scalable, well-documented API. Code quality, clear commit history, and modular structure are non-negotiable because this will expand in phases. Acceptance I will consider the first phase delivered when I can: 1. Connect at least one store (e.g., WooCommerce) and one marketplace (e.g., Trendyol). 2. Upload a variant product, see it live on the marketplace with correct mapping, price and stock. 3. Receive an order from that marketplace back into the panel within minutes. 4. Toggle user roles and confirm license limits are enforced. If this matches your expertise, let’s talk timelines and milestones.