Portrait of Henry Lee

Hi, I'm Henry Lee

Senior AI Frontend Engineer

I have more than five years of web development experience, specializing in Next.js 15 and generative AI product integration.

I established a documentation-driven workflow with Claude Code that enables the delivery of one to two production-ready features per day.

I independently built AI Chat, AI Dictionary, AI Analyzer, and other products, demonstrating end-to-end product development capabilities.

I continue to explore AI-native development practices and advise teams on adopting modern engineering tools and workflows.

Work Experience

My professional journey and engineering impact

Independent Developer / Freelancer logo

Independent Developer / Freelancer

Senior AI Frontend Engineer

Apr 2024 ~ Present

Key Achievements

  • AI Product Development and Integration: Built henryleelab.com as a personal technology platform integrating AI Chat, AI Dictionary, and AI Analyzer, demonstrating end-to-end product development capabilities.

  • AI-Native Interface Design: Developed streaming interfaces that reduce the perceived latency of LLM responses through real-time rendering and complete Markdown support.

  • Development Workflow Innovation: Established a documentation-driven workflow with Claude Code, enabling the delivery of one to two production-ready features per day.

  • Technical Consulting: Provide AI integration and frontend architecture consulting to help teams adopt modern development tools and AI-native practices.

AI Development
Vercel AI SDK
Google Gemini API
Claude Code
Streaming UI
Frontend
Next.js 15
TypeScript
TanStack Query
Tailwind CSS
EUCARE Co., Ltd. logo

EUCARE Co., Ltd.

Frontend Engineer

Mar 2022 ~ Apr 2024

Key Achievements

  • Telemedicine Platform Design and Development: Led the planning and development of doctor, patient (LINE Mini App), and administrative interfaces for a telemedicine platform in a monorepo architecture.

  • Video Consultation and Integration: Integrated the Twilio SDK and simplified its implementation to deliver video consultations and screen sharing for remote care.

  • Cost and Workflow Optimization: Introduced a development approach that reduced costs by 50% and improved UI, UX, and developer experience, increasing development convenience by 60%.

  • Data Flow and Type Safety: Improved frontend-backend data flow and strengthened type safety with TypeScript, increasing delivery efficiency and maintainability.

  • Product Upgrade and Refactoring: Upgraded the company's React product line and refactored 99% of the codebase, improving product stability and developer experience.

  • AI-Assisted Development Adoption: Pioneered AI-assisted development tools within the team, improving implementation speed and code quality while preparing for later AI product work.

Frontend
Nextjs
TypeScript
styled-components
MUI
Nxjs(mono)
React-Query
Line LIFF
Tools
GitHub
Clickup
Figma
Twilio
WishMobile, Inc. logo

WishMobile, Inc.

Frontend Engineer

Sep 2021 ~ Mar 2022

Key Achievements

  • Frontend Mentoring and Collaboration: Mentored two team members, including an app team lead, helping them become productive with React and develop features independently.

  • Modular Architecture: Partnered with the app team to design a modular architecture and build reusable packages and libraries for rapid project assembly.

  • Engineering Standards and Tooling: Established coding standards and introduced ESLint, Prettier, and Husky to improve reviews, consistency, and code quality.

  • Documentation and Cross-Team Alignment: Documented repository initialization, folder structures, and development conventions to reduce communication overhead across teams.

Frontend
React
React Hook
Redux toolkit
Redux saga
styled-components
Tailwind
Tools
GitHub
Jira
Clickup
Figma
Zeplin
Arisan Intelligence Co., Ltd. logo

Arisan Intelligence Co., Ltd.

Full-Stack Engineer

Jun 2020 ~ May 2021

Key Achievements

  • Critical Performance Improvement: Collaborated to improve multi-channel video loading from more than five seconds to under one second.

  • Website Technology Migration: Independently migrated the company website (www.arisan.io) from jQuery to React, improving interactivity and long-term maintainability.

  • Frontend Workflow Optimization: Created more efficient SCSS practices and a shared component library, improving delivery speed for repeatable layouts by more than 50%.

  • Reusable Components and Form Architecture: Built reusable components and redesigned the architecture and styling of full-page form components to reduce implementation time.

Frontend
React
React Router
React Hook
Redux
SCSS
Jest
Backend
Express.js
TypeScript
MongoDB
Domain-Driven Design (DDD)
Mocha
Tools
GitLab
GitLab CI/CD
Adobe XD
Zeplin

Technical
Articles

Notes and technical insights from my software development journey. Articles are published in Traditional Chinese.

📰 Latest Articles

Medium Article

從前端視角理解 SOLID:I — 介面隔離原則,別再硬塞用不到的 Props 了!

從前端視角理解 SOLID:I — 介面隔離原則,別再硬塞用不到的 Props 了! 本文為 從前端視角理解 SOLID 系列的第五篇。 第一篇:導論,為何好懂的 React …

從前端視角理解 SOLID:I — 介面隔離原則,別再硬塞用不到的 Props 了! 本文為 從前端視角理解 SOLID 系列的第五篇。 第一篇:導論,為何好懂的 React …

AIFront End DevelopmentLifeReactTypeScript+2
August 1, 2025
2 min read
Medium Article

從前端視角理解 SOLID:L — 里氏替換原則,你的「延伸款」別背叛了「基本款」

從前端視角理解 SOLID:L — 里氏替換原則,你的「延伸款」別背叛了「基本款」 本文為 從前端視角理解 SOLID …

從前端視角理解 SOLID:L — 里氏替換原則,你的「延伸款」別背叛了「基本款」 本文為 從前端視角理解 SOLID …

BackendFront End DevelopmentJavaScriptLifeReact+2
August 1, 2025
2 min read

⭐ Featured Articles

Medium Article

AI 溝通老是失敗?我花不到三小時,做了一個「AI 的 AI」當解方

靈感:一個逐漸清晰的頓悟

當開發者的價值從「寫 Code」轉向「下指令」:一個真實的極速開發案例

AISoftware DevelopmentPrompt EngineeringCommunicationTechnology+2
July 8, 2025
3 min read
Medium Article

AI 不是取代你,而是強化你:一位工程師的四大 AI 生產力實戰報告

一、ChatGPT (2023/01–2024/03):啟蒙與拓展

從最初的驚艷到成為日常的討論夥伴,這是我與 AI 一同走過三年的真實心得。

AIProductivityFurture Of WorkGenerative Ai ToolsSelf Improvement+2
July 2, 2025
6 min read

Skills

My software development strengths, from core expertise to supporting technologies.

AI Application Development

(Expert)

Vercel AI SDK
Google Gemini API
Prompt Engineering
Streaming UI

Modern Frontend Architecture

(Expert)

Next.js 15
React 19
TypeScript
TanStack Query
Zustand

UI and Development Tools

(Proficient)

Tailwind CSS / DaisyUI
Turborepo (Monorepo)
Claude Code-Assisted Development
Git & GitHub
Figma / Zeplin

Backend Experience

(Familiar)

Node.js / Express
MongoDB
Supabase

Education and Training

My academic background and continuing education

Mentor Program, Cohort 3

Participant

Apr 2019 ~ Dec 2019

Minghsin University of Science and Technology

Bachelor's degree, Chemical and Materials Engineering

2009 ~ 2011

I-Shou University

Associate degree, Chemical Engineering

2007 ~ 2009

Let's Work Together

Interested in my experience or working together? I am open to remote and full-time opportunities and would be glad to connect.

Email

The best way to reach me. I usually reply within 24 hours.

yhlscallop@gmail.com

Other Platforms

You can also learn more about my work through these platforms.

GitHub · Code
LinkedIn · Profile
Medium · Articles
Email · Direct contact

Open to: Frontend and full-stack roles, remote or on-site
Core strengths: React, Next.js, TypeScript, and frontend architecture
Response time: I usually reply within 24 hours