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Lim Yi Xuan 林宇軒 · Kael

Full-stack engineer & IT lead

Email kaelsohappy1@gmail.com GitHub github.com/KaelLim Portfolio portfolio.kaellim.com Hualien, Taiwan

Summary

  • IT Lead at the Tzu Chi Foundation in Hualien, Taiwan, since 2023. I lead a team of 5–8 and run projects from requirements to launch. Working since 2019.
  • I build the foundation’s public websites, the open-source Rust backend that runs 6 of its sites and tools (drust), and AI tools that cite their sources and keep data in-house.
  • AI-native: spec → plan → implement → review with Claude Code. Certified MOEA iPAS AI Application Planner (2026).

Experience

  • IT Lead · Full-stack Engineer / Project Manager · Tzu Chi Foundation, Hualien, Taiwan 2023-07 – now

    I lead a team of 5–8, build the websites and the platform they run on, and bring AI tools into colleagues' daily work.

  • Senior Engineer (semiconductor) · Unimicron Technology, Taoyuan, Taiwan 2022-07 – 2023-06

    Product R&D and quality control at a PCB maker; most of the job was coordinating with other departments to keep quality where it had to be.

  • Project Assistant, Higher Education Sprout Project · Tzu Chi University of Science and Technology, Hualien, Taiwan 2019-02 – 2022-07

    Planned and ran events and project paperwork, and wrote small programs to make the routine parts faster.

Education

  • BSc, Information Technology & Management · Tzu Chi University of Science and Technology, Hualien, Taiwan 2014-09 – 2018-06

Selected work

Abilities

FoundationLv5
Platform engineering · AI-native development
ProvenLv4
Public websites · Web Components · Backend services & APIs · Site & data migration · Auth & access control · Data pipelines & realtime · Retrieval with citations (RAG) · AI agents & tool use · CI/CD & edge deployment · Automated testing · Turning staff needs into tools
In useLv3
Complex browser layout · PostgreSQL & database testing · LLM evaluation · Self-hosted models · Containers & self-hosting · Security practice · Multi-model review · Team lead & delivery (self-reported)
BuiltLv2
Speech (ASR & TTS) · Teaching AI to non-engineers
Learning
Organisation-wide SSO · Archive cutover · Voice cloning · Paid SaaS

Self-rated against written level rules; every level links to its evidence on the portfolio’s Skills page.

Toolbelt

TypeScript · Python · Rust · SQL · React · Next.js · Astro · Lit · PostgreSQL · Supabase · Docker · Cloudflare · GitLab CI · Claude Agent SDK · MCP · RAG

Certifications

  • iPAS AI Application Planner · Ministry of Economic Affairs (MOEA), Taiwan, 2026-08-15
  • Top Executives Team Building Program in AI Literacy (Tzu Chi Foundation cohort) · Taiwan AI Academy, 2024-11-08
  • AIA AI Literacy Certification · Taiwan AI Academy (AIA)
  • Adobe Certified Associate — Photoshop · Adobe
  • ELS English Programme · ELS Language Centres
  • TOEIC · ETS

Languages

  • Mandarin Chinese (fluent)
  • English (intermediate, TOEIC 785)
  • Malay (basic)