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I’m a senior full-stack developer with 10+ years of experience building production-grade Node.js/Express and microservices architectures, along with React/Next.js frontends. I enjoy owning features end-to-end—from database schema and API design to pixel-perfect UI—while optimizing performance, reliability, and developer productivity. In my recent work, I’ve helped deliver AI-powered enterprise products by integrating AI chatbot/assistant experiences with REST APIs and deploying containerized services on AWS. I’ve also built Stripe-powered subscription/billing workflows, improved page load times by ~30%, and mentored teams through code reviews and architecture decisions so products can ship smoothly and scale with confidence.…I’m a senior full-stack developer with 10+ years of experience building production-grade Node.js/Express and microservices architectures, along with React/Next.js frontends. I enjoy owning features end-to-end—from database schema and API design to pixel-perfect UI—while optimizing performance, reliability, and developer productivity. In my recent work, I’ve helped deliver AI-powered enterprise products by integrating AI chatbot/assistant experiences with REST APIs and deploying containerized services on AWS. I’ve also built Stripe-powered subscription/billing workflows, improved page load times by ~30%, and mentored teams through code reviews and architecture decisions so products can ship smoothly and scale with confidence.

Karthick Jayabalan

Full Stack Developer, Front-End Developer, Web Developer, +2

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I’m a senior full-stack developer with 10+ years of experience building production-grade Node.js/Express and microservices architectures, along with React/Next.js frontends. I enjoy owning features end-to-end—from database schema and API design to pixel-perfect UI—while optimizing performance, reliability, and developer productivity. In my recent work, I’ve helped deliver AI-powered enterprise products by integrating AI chatbot/assistant experiences with REST APIs and deploying containerized services on AWS. I’ve also built Stripe-powered subscription/billing workflows, improved page load times by ~30%, and mentored teams through code reviews and architecture decisions so products can ship smoothly and scale with confidence.…I’m a senior full-stack developer with 10+ years of experience building production-grade Node.js/Express and microservices architectures, along with React/Next.js frontends. I enjoy owning features end-to-end—from database schema and API design to pixel-perfect UI—while optimizing performance, reliability, and developer productivity. In my recent work, I’ve helped deliver AI-powered enterprise products by integrating AI chatbot/assistant experiences with REST APIs and deploying containerized services on AWS. I’ve also built Stripe-powered subscription/billing workflows, improved page load times by ~30%, and mentored teams through code reviews and architecture decisions so products can ship smoothly and scale with confidence.

Available to hire

I’m a senior full-stack developer with 10+ years of experience building production-grade Node.js/Express and microservices architectures, along with React/Next.js frontends. I enjoy owning features end-to-end—from database schema and API design to pixel-perfect UI—while optimizing performance, reliability, and developer productivity.

In my recent work, I’ve helped deliver AI-powered enterprise products by integrating AI chatbot/assistant experiences with REST APIs and deploying containerized services on AWS. I’ve also built Stripe-powered subscription/billing workflows, improved page load times by ~30%, and mentored teams through code reviews and architecture decisions so products can ship smoothly and scale with confidence.

Skills

Experience Level

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Expert

Work Experience

Senior Full Stack Developer — AI Products at Lightring.ai

December 1, 2025 - July 1, 2026

Built and shipped AI-powered enterprise features across React/TypeScript frontends and Python (FastAPI) + Node.js backend services, deployed as containerized microservices on AWS. Contributed to Knowledge Navigator by developing AI chatbot/assistant capabilities that help users discover and navigate internal knowledge. Contributed to ESP (Enterprise Service Platform) by implementing AI chatbot/assistant functionality aligned to enterprise service workflows. Designed and integrated REST APIs connecting frontend and backend services to ensure reliable data flow for AI experiences. Packaged services with Docker and delivered through automated CI/CD pipelines to keep environments consistent from local development to production.

Senior Software Engineer (Full Stack) at Code Works India Private Limited

September 1, 2023 - December 1, 2025

Owned full-stack features across a multi-module enterprise platform, spanning React.js/TypeScript UI and Node.js/Express.js + Python (FastAPI) backend services. Built and maintained core REST API services, and helped design a microservices architecture by decomposing capabilities into independently deployable Node.js services with clear API contracts and service-to-service communication. Containerized services with Docker and implemented CI/CD pipelines to automate build, test, and deployment, reducing manual release friction. Built a B2B Subscription Billing Engine with Stripe integration for recurring billing, invoicing, and plan/tier management. Deployed containerized services on AWS and improved reliability, while also tuning full-stack performance to reduce application load time by ~30%. Mentored engineers on frontend/backend (Node.js and FastAPI), Docker, and AWS; partnered with product and QA in an Agile/Scrum environment.

Lead Software Engineer (Full Stack) at Iris Software Technologies

May 1, 2022 - September 1, 2023

Led frontend and full-stack engineering delivery for enterprise client projects, including sprint planning, task allocation, and technical decision-making. Developed high-performance applications using React.js/TypeScript and Node.js/Express.js services. Built backend microservices in Node.js/Express.js by defining REST API contracts and integration patterns across services. Delivered an e-commerce analytics dashboard with React-based visualizations backed by REST APIs. Used Docker for consistent environments and worked with CI/CD pipelines for automated builds and releases. Created reusable UI components to improve delivery speed and visual consistency, and conducted code reviews to raise overall code quality.

Senior Software Engineer (Full Stack) at Fareportal India Pvt Ltd

October 1, 2021 - May 1, 2022

Built responsive and scalable applications for a high-traffic travel platform, optimizing both frontend rendering and API-level performance. Worked across React frontends and Node.js/Express.js services within a microservices-based backend supporting booking traffic. Implemented reusable UI patterns and clean API integration layers to improve long-term maintainability.

Technology Specialist (Full Stack) at Infosys

November 1, 2018 - June 1, 2021

Developed enterprise applications using React.js/Redux with Node.js/Express.js backend services across large-scale client engagements, including a banking client (ANZ). Built and maintained Node.js/Express.js REST APIs for business logic and integration with downstream enterprise systems. Integrated Stripe payment gateway to support secure transaction workflows within the client application. Designed and managed MySQL databases for enterprise applications, including schema design and query optimization for data-heavy features. Standardized builds and deployments using Docker and CI/CD pipelines. Delivered scalable full-stack solutions using Agile methodologies with cross-functional teams.

UI Developer at Fortunecode

November 1, 2017 - October 1, 2018

Built responsive, cross-browser user interfaces using JavaScript (ES6+), HTML5, CSS3, SASS, and React.js, translating designs into production-ready reusable components. Developed and maintained Node.js/Express.js REST API services powering the frontend, covering the request lifecycle from route handling to database queries. Integrated frontend apps with REST APIs and collaborated on data contracts and response modeling. Worked with MySQL for schema updates and query writing to support new features, and used Git with code reviews in an Agile process. Improved performance, responsiveness, and accessibility across key product screens.

Software Trainee at Codemantra

September 1, 2016 - October 1, 2017

Built web application features using JavaScript, HTML5, CSS3, and jQuery while contributing production code. Developed Node.js/Express.js backend endpoints and helped wire them into frontend workflows. Wrote and optimized SQL queries against MySQL for reporting and data-handling features. Consumed REST APIs, debugged integration issues, supported bug fixes, UI enhancements, and testing on live applications. Learned Git-based version control, code review practices, and Agile delivery fundamentals.