1. Spearheaded the migration of legacy e-commerce web codebases to modern frameworks Nextjs, reducing maintenance costs by 25%.2. Architected and implemented a component-based design system using React and Redux, improving development efficiency by 30%.3. Implemented performance optimizations such as lazy loading and skeleton screens, resulting in a 20% improvement in page load speed.

1. Delivered software solutions for food delivery business requirements, developed new web pages and features for management systems, and improved performance of frequently visited pages by 25%.2. Collaborated with UX/UI designers to enhance user experience and accessibility, achieving a 20% increase in user engagement.3. Conducted code reviews and mentored junior developers, organized 10+ technology sharing sessions, and delivered 3+ speeches, contributing to a 20% increase in team productivity.

1. Led educational project development and creation of a new mini program and web application.2. Abstracted common logical code into SDK, improving compatibility with different platforms and reducing code redundancy by 40%.3. Refactored upload SDK, reducing the package size from 128KB to 30KB, leading to a 75% reduction in load time.4. Received the 'Good Coder' badge two consecutive times for assisting teammates with code reviews and sharing best coding practices.

1. Created a content management system, enabling non-technical staff to build web pages independently and reducing developers’ time by 50%.2. Optimized performance of web applications, reducing QPS by 30% and improving the rendering process by 20%.3. Built a UI library based on Vue.js, contributing 10+ components and supporting the creation of hundreds of web pages, reducing the average development time by 15%.