Backend & Distributed Systems
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Automated Asynchronous Notification & SMS Gateway Service
High-reliability asynchronous notification microservice handling bulk transactional SMS, email alerts, and webhook triggers with queue retry policies.
Role
Senior Software Engineer
Timeline
2024 — Present
Client / Domain
Enterprise Platform
Category
Backend & Distributed Systems
Core Technologies & Infrastructure
Node.js / ExpressNestJSTypeScriptRedisPostgreSQLDocker
Architectural Breakdown & System Design
# Automated SMS & Transactional Notification Gateway
A microservice engineered to handle multi-provider SMS dispatching, transactional email alerts, and webhook deliveries with high fault-tolerance.
### Architecture Highlights
- **Distributed Queue Processing:** Redis-backed worker pools to process tens of thousands of outbound notifications without blocking primary application threads.
- **Provider Fallback Routing:** Automatic failover between local telco SMS aggregators and global providers in case of API downtime.
- **Audit & Analytics:** Real-time delivery status logging, failure metrics, and client quota management.
System Artifacts & Screenshots
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