● Significantly improved system performance using k6, increasing request handling from 8% to 99% ● Reduced engineering resource needs by 99% through the integration of Builder.io ● Led the development of a seamless single sign-on system, effective web notifications, and efficient internationalization (i18n), achieving a substantial 90% reduction in translation expenses ● Developed and maintained features using React.js, Next.js, and Ruby on Rails; optimized containerization services ● Enhanced system insights and efficiency using Filebeat, APM Server, and Elasticsearch for log analysis, bottleneck resolution, and search system development ● Ensured system reliability through monitoring with Grafana, and established robust CI/CD pipelines using GitHub Actions and Circle CI ● Enhanced article page performance, achieving a 60% improvement in loading speed. Developed a technical architecture template, significantly expediting project planning and reducing oversights

● Develop auxiliary testing Android APP, effectively shortening routine testing time during SDK iterative updates ● Use datadog, selenium, and cypress for end-to-end testing to ensure product stability ● Maintain the redmine system and greatly improve the efficiency of tracking product BUG repair progress ● Developed redmine plug-in. When the problem changes, messages can be sent immediately through mattermost to reduce missed orders ● Use Raspberry Pi to develop weak network environment simulation to increase the variability of various testing scenarios ● Use Mitmproxy to track app api status and confirm the cause of the problem