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SaaS Backend API

99.9%

Uptime

<50ms p95

Response Time

10,000+

Concurrent Users

94%

Test Coverage

The Problem

A growing SaaS startup needed a scalable, secure backend API to support their web and mobile applications.

Strategy

Architected and built a production-ready backend: 1. **API Design**: RESTful API with OpenAPI documentation. 2. **Authentication**: JWT-based auth with RBAC. 3. **Performance**: Redis caching, connection pooling. 4. **Infrastructure**: Docker on AWS with auto-scaling.

Tools Used

Node.jsExpressMongoDBRedisDockerAWSGitHub Actions

Results

Built a scalable backend API handling 10,000+ concurrent users with 99.9% uptime and sub-50ms response times.