Open to opportunities

Hemant Kumar

@hemantkumar10

React.js Frontend Developer delivering high-performance web apps with scalable components and measurable performance gains.

India

Message

What I'm looking for

I’m looking for a React-focused role where I can build reusable component architecture, optimize performance and Core Web Vitals, and own API integration plus CI/CD and monitoring to ship reliably in Agile teams.

I’m a React.js Frontend Developer with 4.5+ years building production-grade, high-performance web applications. I focus on shipping frontend systems that are fast, reliable, and easy for teams to extend.

My specialty is component architecture and state management—Redux Toolkit, React Query, and Zustand—plus clean API integration. I build reusable UI patterns that translate product and UI/UX designs into responsive, maintainable code.

I’ve delivered measurable performance impact, including “40% faster page loads,” and improved delivery speed by architecting modular, reusable React components across teams. I also reduced production UI bugs through code review rigor and cross-browser compatibility testing, and I improved deployment by contributing to CI/CD and production monitoring with Sentry and GA4.

I thrive in Agile/Scrum sprints, collaborating across backend engineers, product managers, and designers to make strong frontend architecture decisions. I’m committed to scalable solutions, continuous quality, and faster issue detection so releases stay smooth.

Experience

Work history, roles, and key accomplishments

Software Engineer

Techahead

Oct 2024 - Jul 2026 (1 year 9 months)

Architected modular, reusable React components and advanced state management to improve frontend delivery speed and reduce duplicate component builds by ~30% across 3+ product teams. Improved reliability through cross-browser testing, CI/CD pipeline enhancements, and production monitoring (Sentry, GA4).

React JavaScript TypeScript Context API Redux toolkit React Query Zustand Cross Browser Testing CI CD GitHub Actions Gitlab CI Sentry GA4 Agile Scrum

Frontend Developer

Declone Labs Pvt Ltd

Aug 2023 - Aug 2024 (1 year)

Implemented Next.js with SSR and performance optimizations to decrease page load time by 40%, improving Core Web Vitals. Used RTK Query to simplify asynchronous data fetching and supported release stability via code reviews and end-to-end testing while streamlining CI/CD workflows.

Next.js Performance Optimization Data Fetching Code Review End To End Testing CI CD

Frontend Developer

Loopnix

Mar 2021 - Aug 2023 (2 years 5 months)

Built and maintained scalable React-based frontend features, delivering 5+ production-grade web applications for cross-device users. Improved maintainability by refactoring legacy JavaScript into modular components and supporting pixel-accurate, responsive layouts with UI/UX designers.

React JavaScript HTML5 Responsive Design Refactoring