Full-stack Developer

Key Responsibilities: Build a Multi-Tenant SaaS architecture where multiple vendors can sign up and manage their dashboard. Integrate Meta WhatsApp Business API (WABA) for sending bulk messages, managing templates, and handling Webhooks for real-time delivery status. Develop a user-friendly CRM frontend for contact management, campaign scheduling, and analytics. Implement secure vendor authentication (Login/Signup), role-based access control, and database separation. Required Skills: Backend: Node.js (Express), Python (Django/FastAPI), or PHP (Laravel). Frontend: React.js, Next.js, or Vue.js. Database: PostgreSQL or MySQL (with strong query optimization for bulk data). APIs: REST API development, Meta Graph API, Webhooks, and Postman. Additional: Experience with message queues (like Redis/RabbitMQ) to handle high-volume bulk messaging without server crashes.