Senior Full-Stack Developer (Mercur.js + Medusa) – QA & Marketplace Validation (1–2 Days)

We are seeking an experienced **Senior Full-Stack Developer with strong QA testing experience** to validate our **Mercur.js + Medusa** multi-vendor marketplace. The marketplace is already installed and includes an **Admin Dashboard, Vendor Portal, and Customer Storefront**. This is **primarily a QA and validation project**, not a development project. Your responsibilities will include reviewing the official Mercur documentation and demo videos, creating a realistic demo marketplace environment, validating all documented functionality, identifying bugs, investigating root causes where possible, and providing recommendations for improvement. A detailed **Project Scope, QA Testing Guide, and Deliverables document is attached**. Please review it carefully before submitting your proposal, as it outlines the required marketplace setup, testing requirements, expected deliverables, and acceptance criteria. **Estimated Duration:** 1.5 days