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Working from home
163 followers · 75 following

Achievements

Achievement: YOLOAchievement: Pair ExtraordinaireAchievement: Pull Sharkx2Achievement: Starstruckx2Achievement: Arctic Code Vault Contributor

Achievements

Achievement: YOLOAchievement: Pair ExtraordinaireAchievement: Pull Sharkx2Achievement: Starstruckx2Achievement: Arctic Code Vault Contributor

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LienJack/README.md

Hi there, I'm Lien Jack

Lien Jack header banner

English · 简体中文 · 日本語

Full Stack Engineer / Agent Builder based in Tokyo

Former NetEase / ByteDance / Ethereum Community Fund, with product engineering experience across Lark, CapCut, and Ulike

I build agent workflows, product systems, and interfaces with a little anime-flavored charm.

Tokyo Full Stack Focus Anime UI

Blog Profile views followers stars

About Me

  • I previously worked at NetEase, ByteDance, and Ethereum Community Fund, building products for large-scale users and fast-moving teams.
  • I have contributed to projects such as Lark, CapCut, and Ulike, and I enjoy turning product ideas into reliable, shippable systems.
  • Based in Tokyo and working remotely, I am currently focused on Agent development, frontend experience, backend architecture, engineering productivity, and AI-native workflows.
  • I care about software that feels smooth to use, stable to maintain, and memorable in the details.

Featured Article

One post I especially recommend if you're interested in coding agents and tool-driven workflows:

Read the featured post · Visit the blog

Capability Map

Not a giant laundry list, just the three lanes I use most when shipping product end to end.

Frontend Craft

Polished product UI, interaction rhythm, and maintainable interface systems.

Frontend stack

Product UI Design Systems Interaction

Backend Logic

API layers, agent workflows, and services built to keep iteration fast and clean.

Backend stack

API Design Automation Service Architecture

Data & Infra

Storage, caching, containers, and the foundations that make systems durable in practice.

Database and infra stack

SQL Caching Containers

I usually work across all three lanes rather than treating them as separate handoff steps.

Current Focus

  • Designing practical agent workflows and developer tooling
  • Crafting polished product experiences with strong engineering foundations
  • Building stable, extensible frontend and backend systems
  • Improving engineering productivity and developer experience
  • Exploring real-world AI-native development patterns

Pinned Loading

  1. text2sql text2sql Public

    A full-stack Text2SQL learning project with LangGraph agent workflow, RAG context retrieval, multi-datasource querying, and SQL validation.

    TypeScript 1

  2. guga-agent guga-agent Public

    Guga Agent helps turn a working agent demo into an agent system that can be shipped, recovered, audited, and embedded in real products.

    TypeScript 1

  3. learn-agent learn-agent Public

    A technical knowledge base for learning AI Agents, Claude Code internals, databases, Redis, and frontend engineering through system-level notes and source-code analysis.

    JavaScript 6

  4. arch-insight arch-insight Public

    An agent skill for turning source repositories into architecture insight, design philosophy, tradeoff analysis, and borrowable engineering patterns.

    JavaScript 9

  5. build-harness build-harness Public

    Build an Agent Harness from first principles, from a simple CLI assistant to a controllable agent runtime.

    JavaScript