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Mugilan-Codes/README.md

Mugilan E.S.

Backend Engineer • Node.js • TypeScript • Distributed Systems


🚀 About Me

Backend Software Engineer with 3+ years of production experience designing and scaling API-driven systems using Node.js and TypeScript.

I build high-performance REST APIs, optimize database workloads, and design reliable backend architectures with caching, messaging, and cloud deployments.

Additionally, I’ve worked on production Flutter integrations and contributed to Spring Boot-based microservices during migration initiatives.

Contributed to backend architecture powering production applications with 10k+ downloads across deployments.


🧠 Technical Expertise

Backend (Primary)

Node.js TypeScript Express

  • REST API design & modular architecture (controller–service–repository)
  • JWT authentication, rate limiting & validation
  • Stripe integration with secure webhook handling

Databases & Caching

PostgreSQL MongoDB Redis

  • Query optimization (40% API response improvement)
  • Schema design & indexing
  • Redis caching & Pub/Sub

Messaging, Cloud & DevOps

Kafka AWS Docker

  • Event-driven workflows
  • Background job processing
  • Dockerized deployments
  • CI/CD pipelines
  • AWS EC2 & S3

Production Exposure

Flutter Spring Boot

  • Flutter: production app development + backend integration
  • Spring Boot: contributed to microservices during migration initiatives

📌 Production Impact

  • Improved API response time by 40% via query optimization & Redis caching
  • Designed modular controller–service–repository architecture
  • Built JWT-based authentication and rate-limiting mechanisms
  • Implemented event-driven workflows using Redis Pub/Sub and Kafka
  • Deployed Dockerized services on AWS with CI/CD pipelines

🎯 Engineering Philosophy

  • Build systems that scale.
  • Optimize before it becomes a bottleneck.
  • Design for maintainability.
  • Production-first thinking.

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