Open to senior full stack opportunities
Tamil Nadu, India

Karuppusamy
Senior Full Stack Engineer

I build scalable, multi-tenant web platforms - from Nx monorepo architecture and secure RBAC systems to the React interfaces on top of them.

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4+

Years experience

7

Projects shipped

4

Articles written

Toolkit

Skills & tools

The languages, frameworks, and infrastructure I reach for most.

Frontend

Interfaces built with React and modern tooling

  • React
  • JavaScript
  • TypeScript
  • HTML
  • CSS
  • Tailwind CSS

Backend

APIs and services across Java, Node.js, and Python

  • Java
  • Node.js
  • Next.js
  • Fastify
  • Python
  • Tomcat

Tooling & Infra

Monorepo architecture, cloud, and CI/CD

  • Git
  • Nx Monorepo
  • AWS
  • Docker
  • CI/CD (GitHub Actions)

Experience

Where I've worked

Roles where I shipped production systems end to end.

Full experience

  1. Senior Software Engineer

    atBlunav System Private Limited
    PresentIndia
    full time

    Architecting Aerios, a flagship airport operating system, as a consolidated Nx monorepo with a multi-tenant licensing and RBAC platform underneath it.

    • Consolidated operational interfaces for the flagship Airport Operating System, Aerios, by architecting the system as an Nx monorepo integrating 16 TypeScript libraries and 14+ route modules, resulting in a unified platform architecture.
    • Enabled the creation of five independently licensable products by leading the transformation of a monolithic architecture and extracting core module-scoped components (Redux slices, RTK Query, Zod schemas) into dedicated shared libraries.
    • Accelerated feature delivery for key enterprise clients by 30% through per-organization entitlement gating and standardized development specifications.
    React
    Next.js
    Redux Toolkit
    Nx
    TypeScript
    Socket.IO

  2. Software Engineer

    atZoho Corporation
    India
    full time

    Shipped high-value features and stabilized platform quality for ManageEngine OpManager, a Java/Tomcat network monitoring product.

    • Drove enterprise value and sustained product growth by enhancing the Java/Tomcat backend and SQL data layer, resulting in the launch of 20+ high-value features for ManageEngine OpManager that increased platform stickiness.
    • Stabilized product quality by performing deep root cause analysis of Java stack traces and MS SQL slow-query optimization, resulting in a 50%+ reduction in the open-defect backlog.
    • Increased system stability and efficiency by refactoring internal WebSocket communication handlers to eliminate stale connections, resulting in a 95% decrease in related customer complaints and a reduced system memory footprint.
    Java
    Tomcat
    MS SQL
    WebSocket

Selected work

Things I've shipped

A few projects that show the range, from web platforms to open-source hardware tooling.

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Web

TechBuz

Mobile comparison platform reaching 280K+ monthly readers

React
Next.js
Firebase
280K+ monthly views
Visit site
Open source

TurnSmart

Open-source platform for building custom smart home devices

ESP32
Arduino
REST API
View codeRead write-up
Web

Todo App

A full-stack todo app, built and shipped in one day

Next.js
Firebase
Tailwind CSS
Built in one day
Visit site

Recent writing

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Contact

Let's build something together

Open to senior full stack opportunities. Feel free to reach out - I read every message.

d.karuppusamy@outlook.com

Email meView Resume