Title: WhatsApp Official API SaaS Platform Developer Project Description: We are looking for an experienced developer to build a WhatsApp Official API SaaS platform or provide a ready-made solution/script with customization. The platform should allow multiple clients to use WhatsApp Business API services through a subscription-based SaaS model. Key Requirements: - Integration with WhatsApp Official Business API / WhatsApp Cloud API - Multi-tenant SaaS architecture - User dashboard and admin panel - WhatsApp message sending and receiving system - Contact management - Bulk messaging functionality - Webhook integration - Template message management - Subscription/payment integration (optional) - API for customers - Secure and scalable architecture Preferred (Optional): - Ready-made WhatsApp SaaS script - Experience with Meta WhatsApp Cloud API - Experience building SaaS platforms - Experience with Node.js / PHP / Python / Laravel / React - Deployment support Deliverables: - Fully working SaaS system - Source code - Documentation - Setup and deployment support Please share: - Previous WhatsApp API projects - Demo or portfolio - Technology stack you will use - Timeline and cost estimate