Responsible for creating and maintaining high-quality web applications for a frontline workermanagement system using React, Next.js, GraphQL/Apollo GraphQL, and Tailwind CSS.● Utilized React, Jest, React Testing Library, Storybook.js, Redux, Tailwind CSS, andstyled-components to build robust and reusable components, a UI library, and a design system.The design system and UI library followed atomic design methodology.● Maintained and enhanced a legacy project written in Angular and migrated it to React;transformed the data layer built by Redux and Mobx to GraphQL, React context, and hooks.● Engaged in sprint planning and solution design, estimating feature complexities, reviewingdesigns (Figma), and breaking down tasks.● Collaborated with cross-functional teams, including architects, designers, and backenddevelopers, to deliver seamless user experiences. Worked closely with full-stack and SWATdevelopers, engaging in pair programming to resolve complex front-end issues.● Mentored junior developers and conducted code reviews for pull requests.

● Led one module and contributed to several modules of online travel agency Apps with over0.2 billion monthly active users (Ctrip and Trip.com). Added new features to the Ctrip andTrip.com App using React-native, Redux, and Flutter every sprint.●Used React, Redux, to build the website homepages and booking system for hotels.●Cooperated with Back-end Developers to implement the interaction between frontend andbackend, designed the protocol and data structure for REST API and Microservices.●Worked closely with Business Analysts to design and implement event-based tracking.● Collaborated with Back-end Developers and Quality Assurance to analyze and solvemanufacturing problems and bugs.

●Designed and built a UI library to increase development efficiency using Vue.● Worked closely with product managers and UI/UX Designers to meet project requirements,goals, and desired functionality.● Contributed to the in-house component library, enhancing colleagues' development efficiencyeffectively.● Participated in the website development process from prototype to going live and reachingover 100,000 users.● Used Ajax, and Axios to implement data interaction from RESTful APIs.● Implemented enhancements by optimizing cross-browser compatibility and pageperformance.