Software Engineer
David
Chien
Software engineer who obsesses over build systems, billing pipelines, and making slow things fast.
Currently in Prague 🇨🇿 — also available in Taiwan 🇹🇼 and the USA 🇺🇸
Work Experience
Make
Software Engineer
Feb 2026 – PresentCurrent
- Owning and evolving the billing system powering Make's automation platform, ensuring reliable payment processing at scale.
Appier
Software Engineer
July 2024 – Feb 2026
- 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
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
Software Engineer
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
Software Engineer (Part time)
Feb 2022 – Feb 2023
- Owned and evolved a food delivery platform, building end-to-end ordering and restaurant management features.