The situation
A greenfield SaaS architecture for business messaging: WhatsApp workflows, contacts, automation, webhooks, campaigns, usage tracking and AI-assisted conversations.
All case studies
Product / Internal Build
Relaydesk: WhatsApp Automation SaaS
Multi-tenant messaging architecture with queues, webhooks, and campaigns.
Next.jsTypeScriptTailwindshadcn/uiSupabase/PostgreSQLDrizzleRedisBullMQWebhooks
The problem
Business messaging systems need reliable webhook processing, background jobs and tenant isolation without turning the main application into a fragile monolith.
What we built
A modular architecture separating the Next.js application, API routes, webhook ingestion, queue/worker processing, database access and automation services.
What the system does
- Multi-tenant WhatsApp messaging workflows
- Webhook ingestion decoupled from the main app
- Queue/worker processing for background jobs
- Campaign and usage tracking
- AI-assisted conversation handling
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