- Developed keystone hardware wallet blog system using Strapi, Next.js and Styled-Components.- Set up the blog system's deployment environment using AWS services, such as ECR, EC2, S3, etc.- Used Google Lighthouse for performance monitoring and analysis, implemented lazy loading for components below the fold with React lazy load, cached packaged JS files, fonts, and images using CloudFront, and improved website performance by 20%.- Optimized the official website's SEO.- Developed an SDK using JavaScript for integrating hardware wallets with software wallets, parsing transaction information, and signing transactions.

- Developed new features: developed new UI module using React functional component and styled-component on home page, increased the views- Developed front end test strategy: selected react testing library as UI component test tool and created test strategy for different kinds of React component, improved the reliability of unit test- Improved web performance: used webpack to optimize the bundle size, used lazy load to import component blow the fold, added placeholder to React component, got ride of layout shift and made web page smoother, add cloudFront to the website and api - Optimized search logic: modified the ElasticSearch query, enabled users to search project by price and property type, reduced search time to one third of the original- Blue/Green deployment, TDD, CI/CD, Agile software development