Enterprise multi-tenant customer service solution

Full-stack WhatsApp communication platform built for scale, reliability, and performance. Enables businesses to manage customer interactions at scale with enterprise-ready architecture.

Tech Stack

Backend: TypeScript, Node.js, Fastify, Prisma ORM, PostgreSQL, Redis, BullMQ

Frontend: React 18, TypeScript, Vite, Tailwind CSS, Zustand, React Query

Real-time:Socket.io (WebSocket)

WhatsApp: Baileys

Storage: Supabase Storage

AI: OpenAI GPT integration

Monitoring: Sentry, Prometheus, Winston/Pino logging

Core Features

WhatsApp Connection Management

• Multiple simultaneous connections
• QR code authentication with real-time updates
• Persistent session management (PostgreSQL)
• Automatic reconnection with heartbeat monitoring
• Secure credential storage

Real-Time Messaging

• Instant delivery via WebSocket
• Media support (images, videos, audio, documents, locations)
• Supabase Storage for long-term media access
• Message status tracking (sent, delivered, read)
• Quoted/reply messages and typing indicators

AI-Powered Assistant

• Customizable OpenAI GPT assistants per connection
• Configurable parameters (temperature, tokens, context)
• Memory management with Redis caching
• Context-aware conversations

Broadcast Messaging

• Bulk messaging to contact lists
• Personalized variables ({{name}}, {{phone}})
• Rate-limited sending with progress tracking
• Media attachments and privacy policy integration

Conversation Management

• Unified inbox with department-based routing
• Agent assignment and status workflow
• Internal notes, custom tags, conversation history
• Search, filtering, and audit logs

Kanban Board

• Visual workflow management
• Drag-and-drop organization
• Customizable stages with real-time updates

Additional Features

• Contact management with lists and tags
• Team collaboration (transfers, departments)
• Message templates for quick responses
• Conversation metrics and analytics
• File attachments with secure storage

Technical Excellence

Scalability: Horizontal scaling, Redis caching, queue-based processing (BullMQ), optimized queries

Reliability: Automatic error recovery, connection health monitoring, message sync, retry mechanisms

Performance: WebSocket real-time, smart caching, background jobs, efficient media handling

Security: AES-256 encryption, JWT auth, RBAC, input validation, XSS protection, rate limiting

Infrastructure

• Database: PostgreSQL (Supabase)
• Cache: Redis
• Storage: Supabase Storage for media
• Deployment: Railway-ready with Docker
• Monitoring: Sentry integration, Prometheus metrics