David Chien

Software Engineer focused on frontend optimization, infrastructure modernization, and performance tuning for large-scale React applications.

I'm also involved in full-stack development, and I'm interested in building products that help people live better lives.

Currently based between Taipei, Taiwan 🇹🇼 and Seattle, USA 🇺🇸.

Side Projects

Developed a web app that transforms traditional CVs into visually appealing websites.

Developed a webapp that utilizes bscscan api to help users track their progress in the Binance alpha points event.

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.

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.

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.

Dimorder

Feb 2022 – Feb 2023

Bachelor of Science: Computer Science

2019 - 2024