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KK

Kumar Krishnamoorthy

Senior React Front-End Engineer and UI Architect

Bengaluru, India 11+ yrs exp 80 · Excellent

About

Senior React Front-End Engineer and UI Architect who builds production-grade, user-focused web applications from ambiguous ideas. Brings 7+ years of deep React and modern JavaScript experience, backed by strong full-stack foundations. Known for owning features end-to-end, simplifying complex workflows into intuitive UIs, and improving performance and usability in fast-moving Agile product teams. Comfortable working across design, frontend architecture, APIs, and production debugging.

Skills & Expertise (27)

React Expert
9.2/10
8
Years Exp
JavaScript (ES6+) Expert
9.0/10
8
Years Exp
REDUX Advanced
8.7/10
7
Years Exp
Typescript Advanced
8.5/10
5
Years Exp
Node.js Advanced
8.3/10
6
Years Exp
WebSockets Unix shell scripting AWS (EC2, S3) CI/CD (CircleCI) React Native NPM Git Babel Webpack ESLint Enzyme Chai Mocha Jest REST APIs MongoDb Express.js Responsive UI CSS3 HTML5 Redux Toolkit Hooks

Work Experience

React UI Architect

Sonata Software (Client: Microsoft)

Jan 2023 - Oct 2023

Owned end-to-end delivery of multiple frontend features in a micro-frontend architecture, from requirement clarification to production release. Partnered with design and backend teams to convert evolving product requirements into scalable, user-friendly UI solutions. Improved production stability by resolving high and critical security vulnerabilities across frontend dependencies. Implemented internationalization using react-i18next, enabling multi-region product rollout.

React MERN Stack Architect

Harman Connected Services (Client: Tesco)

Oct 2021 - Apr 2022

Designed and implemented intuitive UI flows for complex quality-control workflows used by enterprise business teams. Diagnosed and resolved performance bottlenecks in data-heavy React screens, significantly improving responsiveness. Contributed across the stack, building and enhancing features in both React frontend and Node/Express backend services.

React MERN Stack Architect

UniqueHire

May 2021 - Oct 2021

Built a Q&A and knowledge-sharing platform end-to-end using React, Node.js, Express, and MongoDB. Took ownership of UI enhancements and backend fixes to deliver complete, production-ready features. Worked closely with stakeholders to refine requirements and rapidly ship usable solutions.

Frontend Architect

Mobinius

Dec 2020 - Jan 2021

Led modernization of a legacy React application by migrating class components to Hooks and improving Redux state architecture. Improved rendering performance through memoization and refined state structuring, reducing unnecessary re-renders.

UI Lead

Capgemini (Client: Cisco)

Dec 2019 - May 2020

Led frontend development for a React-Redux enterprise application, guiding a small team on best practices. Designed scalable component structures and conducted code reviews to maintain quality and consistency.

Technical Architect

Zinier

Sep 2019 - Nov 2019

Designed and developed key features for a React-Redux web application used in field operations workflows. Contributed to frontend architecture decisions and conducted peer code reviews.

Technical Manager

Zensar Technologies (Client: Aptos USA)

Jan 2019 - Jun 2019

Contributed hands-on to React and React Native applications while mentoring junior developers. Delivered retail web application features as part of Agile sprint cycles.

UI Architect

Experis IT (Client: Infosys → Merck)

Nov 2017 - Jul 2018

Developed a complex interactive Device Shape Editor using advanced React UI techniques. Designed REST APIs for data persistence and collaborated across teams to deliver integrated solutions.

Full Stack Architect

Nityo Infotech (Client: Northwestern Mutual)

Dec 2016 - Apr 2017

Built a Node.js microservice and a React micro-app consuming backend services. Led a small team while contributing hands-on code in Agile development cycles.

Principal Engineer

Altimetrik (Client: PayPal)

Aug 2016 - Sep 2016

Led a React Native team enhancing features and fixing issues in a production iOS application.

Software Engineer

Yahoo! USA (Yahoo Finance)

Nov 1997 - Oct 1999

Developed stock charting and financial data visualization tools used by a large global audience. Improved charting algorithms and backend performance for high-traffic financial data systems.

Software Engineer and Technical Leadership Roles

Various

Jan 1991 - Jan 1997

Held multiple software engineering and technical leadership roles building large-scale financial and enterprise systems for U.S. clients. Worked extensively with C, C++, UNIX systems, databases, and performance-critical applications, forming a strong foundation in scalable system design and production reliability.

Education

MS, Computer Science - Temple University

- · Afghanistan

MSc (Tech), Computer Science - BITS Pilani

- · Afghanistan

Certifications

No certifications added yet

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Profile Score Breakdown

📷 Photo 0/10
📄 Resume 10/10
💼 Job Title 10/10
✍️ Bio 10/10
🛠️ Skills 20/20
🎓 Education 10/10
⏱️ Experience 15/15
💰 Rate 0/5
🏆 Certs 0/5
Verified 5/5
Total Score 80/100

Profile Overview

Member sinceFeb 2026

Availability Details

Relocation

Open to Relocation