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Production SaaS Architecture Deployed & Maintained

Multi-Tenant WhatsApp Business SaaS Platform

Meta WhatsApp Cloud API, Multi-Tenant Onboarding, Shared Live Chat Inbox, Webhook Pipelines, AI Conversational Routing.

SaaS & Messaging InfrastructureB2B Communication SaaS
Operational Context

The Business Challenge

Businesses struggle to manage customer communications when WhatsApp is locked to individual team members' mobile phones. They lack multi-agent live chat, central contact management, automated webhook routing, and integration with backend CRM databases.

Engineering Implementation

Solution & Systems Architecture

Architected and built a multi-tenant SaaS communication platform integrating directly with Meta's official WhatsApp Cloud API. Features tenant onboarding workflows, phone number provisioning, message template management, a centralized multi-agent live chat inbox, contacts and phonebook management, high-throughput webhook handling, and AI-powered conversational routing to automatically qualify inbound leads and answer repetitive questions.

Interconnected System Layers
  • API Integration: Meta WhatsApp Cloud API with webhook event signature verification
  • Real-Time Messaging: Webhook ingestion with Redis queue processing and live socket updates
  • Backend: Node.js multi-tenant architecture with tenant-scoped database isolation
  • AI Layer: Conversational assistant evaluating inbound customer intent with fallback to human agents
Verified Delivery

Production Outcomes & Capabilities

  • High-throughput webhook architecture processing incoming/outgoing Meta events in real time
  • Shared live-chat inbox allowing multiple team members to manage conversations from one number
  • Automated lead classification and CRM task generation via AI workflow integration
  • Multi-tenant tenant isolation with API key security, role management, and billing administration
Technology Stack
Meta WhatsApp Cloud APINode.jsWebhooksMulti-Tenant SaaSAI AssistantsRedis
Operational Status
Production SaaS Architecture

Deployed in a live operating environment with hands-on infrastructure monitoring and maintenance.

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