Xuechun Lei

Senior Frontend Developer

PingCAP

February 2017 - December 2022

- Developed and maintained the TiDB Cloud UI using React, TypeScript, Mobx, and Jest, enabling efficient monitoring and management of distributed SQL database clusters on AWS and GCP. Delivered critical functionalities, including multi-tenant cluster management, user authentication and authorisation, Stripe payments system integration, and comprehensive performance metrics monitoring based on Prometheus. - Boosted React performance through memoisation techniques, virtualised rendering (react-window), and lazy loading, significantly decreasing load times (20%). - Improved usability, accessibility, analytics integration (Mixpanel), and error tracking (Sentry), aligning with user-centric design principles. - Built automated CI/CD pipelines using Netlify and GitHub Actions, enabling rapid releases and efficient rollbacks. - Documented RESTful APIs with Swagger, leveraging openapi-generator for robust TypeScript type generation, reducing manual boilerplate code (e.g., Axios wrappers) and integration errors by 15%. - Created TiDB Cloud Management Platform using React, TailwindCSS, and TypeScript, implementing RBAC for diverse operational teams (SRE, DBA, Sales, etc.). - Mentored junior developers by fostering adherence to software engineering best practices (e.g., code reviews, SOLID principles) and cultivating a collaborative team environment through agile workflows and knowledge-sharing initiatives. - Built a reusable React component library using Styled-Components and Storybook, ensuring UI/UX consistency. - Contributed to the open-source project Chaos Mesh (Redux, Material UI), implementing initial MVP (Minimum Viable Product) features for managing Chaos experiments and benchmarks.  Migrated legacy website to modern stacks (Gatsby, React, GraphQL), achieving 90+ Lighthouse scores through image optimisation, code-splitting and CDN caching. Boosted user engagement by 18% via Google Analytics-driven strategy refinements. - Built PingCAP’s Markdown-based CRM website with Hugo, automating content deployment via CI/CD (Circle CI). Drove 25% SEO growth through technical implementation and content strategy alignment with the marketing team.