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
- Tzu Chi Portal Migration: The Tzu Chi Foundation's main website, moved from Joomla to static Lit pages. www.tzuchi.org.tw
- Journey to Enlightenment: Live site for a Harvard CAMLab × Tzu Chi immersive exhibition, zero build. 60immex.tzuchi.org.tw
- drust: Open-source Rust BaaS: one SQLite file per tenant, a native MCP endpoint for AI agents. github.com/KaelLim/drust
- Tzu Chi Weekly AI pipeline (internal): Turns an edited Google Doc into a published weekly issue with Claude, audio and push. portfolio.kaellim.com/work/newsletter-pipeline
- legit (internal pilot): Contract-review AI agent with legal RAG and golden-set evaluation. portfolio.kaellim.com/work/legit
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)