Nobody assigned my best work.
Frontend engineer in Tokyo. Four years of finding the problem nobody had picked up yet — performance, build pipelines, design systems — and shipping the fix.
🌐 hakudevtw.vercel.app — work, experience, and a printable résumé
What I use daily:
Used on production projects: Figma · BFF · REST APIs · React Native · styled-components · Sass · React Hook Form · Redux · React Query · Zustand · Nginx · Docker · ESLint · pnpm workspace · Turborepo · GitHub Actions
- Car Rental Japan — Released in January 2026 and profitable from the first month, on a maintainable delivery foundation. Development is ongoing.
- Shinkansen Platform Performance Optimization — Raised the mobile performance score from 36 to over 85.
- Shared UI Library & Design System — The design team could work from a shared Figma component library while the frontend team implemented matching components — consistent UI/UX with substantially less duplicated code. The library was in production use before I left, and other members kept extending it.
Traditional Chinese (Native) · English (TOEIC 895 — business proficiency) · Japanese (JLPT N2 — conversational and business communication)
Last updated: 2026/09/14 — generated from CMS data
