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Authentication & Verification2025Completed
VerifyFlow
A robust microservice that provides WhatsApp-based OTP verification services for businesses, enabling secure user authentication and identity verification at scale.
The Challenge
Creating a reliable, scalable OTP verification system that businesses could easily integrate while ensuring high delivery rates and security.
What We Built
Built a service with WhatsApp Business API integration, Redis for OTP caching, rate limiting, and comprehensive logging for audit trails.
Impact
99.5%
Delivery rate
<1s
Response time
99.5% OTP delivery success rate
Sub-second verification response times
Technologies
Node.jsWhatsApp Business APIRedisPostgreSQL
Key Features
WhatsApp OTP delivery integration
Real-time OTP verification
Enterprise-grade API endpoints
Multi-tenant architecture
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