The Challenge: Instability Hindering Growth
Our fintech partner had reached a critical stage where their legacy application was preventing them from attracting enterprise clients. The monolithic structure made adding features risky, deployments were slow and often caused downtime, and the lack of strong typing led to frequent, difficult-to-trace bugs. The architecture was not ready for modern, rapid iteration.
DevoxLabs' Full-Stack Development Solution
We initiated a phased migration to a modern, reliable full-stack system:
Microservices Decoupling: Architected the application into distinct, self-contained microservices (e.g., User Auth, Payment Gateway, Reporting).
Typed Core: Built all new services using Node.js and TypeScript to enforce strict type-checking, catching the majority of common errors at compile time rather than in production.
CI/CD Pipeline with E2E Testing: Implemented GitHub Actions for Continuous Integration and Continuous Deployment, backed by a comprehensive E2E test suite that runs on every commit.
Reliability Assurance: Configured robust error monitoring and performance tracing with Prometheus and Grafana.
Measurable Outcomes
Reliability and delivery improvements after the migration.
| Metric | Before DevoxLabs | After DevoxLabs | Improvement |
|---|---|---|---|
| Uptime Guarantee | ~99.5% (unstable) | 99.99% | Near-Perfect Reliability |
| Time to Deploy (TTD) | 2 hours (with manual checks) | 15 minutes (automated) | 87.5% Faster Deployment |
| Engineering Velocity (Features/Sprint) | Low and inconsistent | 3x Increase | Accelerated Roadmap |
| Production Bug Count (Critical) | 8-10 per month | 0-1 per month | 90%+ Reduction |
| Code Maintainability Index | Low (Legacy) | High (Typed) | Improved Long-Term Cost |