React Developer with 6 years of experience building and migrating modern web applications. Strong in React, Next.js, JavaScript/TypeScript, responsive UI components, and performance optimization. Experienced working with REST APIs and GraphQL, partnering cross-functionally to improve system performance, and improving developer productivity through testing, debugging workflows, and maintainable UI architecture.

Tony Zheng

React Developer with 6 years of experience building and migrating modern web applications. Strong in React, Next.js, JavaScript/TypeScript, responsive UI components, and performance optimization. Experienced working with REST APIs and GraphQL, partnering cross-functionally to improve system performance, and improving developer productivity through testing, debugging workflows, and maintainable UI architecture.

Available to hire

React Developer with 6 years of experience building and migrating modern web applications. Strong in React, Next.js, JavaScript/TypeScript, responsive UI components, and performance optimization.

Experienced working with REST APIs and GraphQL, partnering cross-functionally to improve system performance, and improving developer productivity through testing, debugging workflows, and maintainable UI architecture.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Work Experience

React Developer at REPAIRPAL
July 1, 2024 - June 1, 2026
Migrated an existing React web application to Next.js (JavaScript/Webpack), reducing load time by 39ms and improving responsive design across the platform. Introduced responsive design principles using CSS media queries and modernized the UI component library with Storybook to improve consistency and maintainability. Overhauled frontend debugging using Chrome DevTools and streamlined workflows with an improved testing framework to reduce debugging time. Optimized code splitting and minification with Next.js/Webpack to reduce bundle size and improve page load times. Partnered with backend teams to optimize GraphQL API calls and add caching mechanisms to reduce latency and improve system performance. Designed a new frontend architecture using React, Next.js, and TypeScript to support scalable feature development and better maintainability.
Frontend Engineer at SANEBOX
March 1, 2022 - July 1, 2024
Integrated Next.js across the web application to improve responsiveness, UI efficiency, and customer satisfaction. Delivered React components end-to-end from concept to deployment, supporting business growth and improved user experience through responsive design. Refactored and shipped a React-to-Next.js version, achieving improved performance and load times. Deployed 12 services to streamline development and reduce debugging time, enabling faster iteration. Refactored the frontend codebase using JavaScript and HTML to improve code quality and reduce technical debt, supporting easier integration of new features and enhancements.
Frontend Developer at CADRE5
December 1, 2019 - March 1, 2022
Maintained high-quality, consistent, and responsive UI components using React/JavaScript best practices with Webpack. Enhanced the application by migrating from legacy React to Next.js over six weeks to improve performance and scalability, reducing load time and improving engagement. Built reusable UI components to speed delivery and reduce debugging time. Optimized the frontend for 10 services by partnering with backend teams to improve API integration, delivering within three months and reducing maintenance effort. Improved responsiveness by applying CSS/HTML optimizations and lazy loading, reducing average load time across pages. Produced comprehensive frontend technical documentation (15 pages) to help new team members ramp up quickly.

Education

Bachelor of Science in Computer Science at Illinois Institute of Technology
January 1, 2019 - January 1, 2022
Bachelor of Science in Computer Science at Illinois Institute of Technology
January 1, 2019 - January 1, 2020

Qualifications

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Industry Experience

Software & Internet