David Chien
Software Engineer focused on frontend optimization, infrastructure modernization, and performance tuning for large-scale React applications. Currently based between Taipei, Taiwan 🇹🇼 and Seattle, USA 🇺🇸.
Side Projects
Work Experiences
Software Engineer
Appier
July 2024 – Present
- Modernized monorepo infrastructure by leading migration from Yarn/Lerna to pnpm/NX, reducing CI/CD pipeline execution time by 83%.
- Designed and deployed a comprehensive logging service, enabling real-time performance monitoring and accelerating issue resolution by 15%.
- Collaborated with cross-functional teams to implement scalable solutions and drive continuous improvement.
- Acted as a key decision-maker in selecting and implementing new build tools.
Software Engineer Intern
Appier
July 2023 – July 2024
- Developed an intuitive campaign management dashboard, streamlining manager workflows.
- Optimized mission-critical page performance, reducing load time from unresponsive to 1 second.
- Spearheaded migration from Webpack to Rspack, achieving a 10x improvement in build times.
- Led major UI library upgrade, coordinating systematic migration across multiple applications and teams.
Software Engineer
LangLive
June 2022 – June 2023
- Refactored gift animation system with WebGL, reducing CPU usage by 30%.
- Re-architected data fetching, cutting API calls by 50% and improving page load speed.
- Implemented end-to-end testing with Playwright across three products.
Software Engineer (Part time)
Dimorder
Feb 2022 – Feb 2023
Education
National Taipei University
Bachelor of Science: Computer Science
2019 - 2024