We are seeking a skilled developer to build a scalable, multi-tenant web application designed for retail and hospitality. The system must allow multiple independent merchants to create their own digital storefronts, manage orders, and handle payments through a centralized dashboard. Core Technical Requirements Multi-Tenant Architecture: Develop a robust system where each merchant has a private data environment, custom QR codes, and unique store settings. Payment Gateway Integration: Implement a secure, local payment gateway (API-based) to handle credit cards and digital wallets. The system must support automated payouts and transaction tracking. POS/Cashier App Integration: Connect the web platform with external Cloud POS/Cashier applications (e.g., Foodics or similar) to synchronize live orders, inventory, and menu updates. Web-First Approach: The solution must be a high-performance, responsive web app (PWA preferred) that requires no app store download for customers. Scope of Work Setup of the multi-tenant database and merchant onboarding flow. Integration of a primary Payment Gateway via REST API/SDK. Integration of 3rd-party Cashier/POS software for order syncing. Development of a customer-facing ordering interface via QR scan. Development of a merchant admin panel for store management. Preferred Qualifications Experience building SaaS or Multi-tenant platforms. Strong background in API integrations (Rest/Webhooks). Knowledge of the Saudi Arabian fintech and retail tech landscape. Ability to deliver a clean, localized UI/UX (Arabic/English). ***** My budget is 3000$ only *****