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Woohyun Lim — AI Engineer

Thinking it through, then thinking again — I’m Woohyun Lim, AI engineer.

For any problem I’m solving, I relentlessly question whether this is truly the right direction, then keep refining and verifying — just as doggedly — until it feels like the problem I defined is genuinely solved. I carry that same relentlessness into learning, making each new technology truly my own.

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About me

Rather than reacting to change, I move first.

New technologies pour out every single day, and change is moving faster now than ever. Rather than passively reacting to that current, I try to stay a step ahead through the active work of learning. More than just noting that “something new came out,” I love putting it to the test on real problems and relentlessly thinking through where it could actually be useful.

Name
Woohyun Lim
Based in
Seoul, South Korea
Focus
Agents · evals · context engineering
Currently
Building harness in the open

History

  1. 2026.03 — now

    Independent AI Engineer

    • Pushing my range as an agentic engineer — solving a wide variety of problems with AI in the loop.

  2. 2025.11 — 2026.02

    boostcamp AI Tech 8th · AI Core, NLP

    • Went deep into NLP while running competitions with teammates and building an AI product.

  3. 2025.09 — 2025.11

    boostcamp AI Tech 8th · AI Core

    • Covered NLP, CV, and RecSys end to end, implementing everything from historic models to the Transformer at PyTorch code level to build solid deep-learning foundations.
    • Ran a competition fine-tuning various BERT models and applying them to downstream tasks.

  4. 2025.06 — 2025.08

    boostcamp AI Tech 8th · Precourse

    • Studied linear algebra, statistics, and the foundations of machine learning and deep learning.

  5. 2024.01 — 2024.04

    AriBio · development team

    • Studied advanced RAG pipelines — self-query retrieval, hybrid search, and RAG fusion.
    • Joined development of a Flutter-based healthcare app, learning mobile UI and state-management patterns.

  6. 2022.02 — 2023.08

    ROK Army, 1st Infantry Division

    • Served 18 months in the 1st Infantry Division; honorably discharged as a sergeant.

  7. 2021.02 —

    Kookmin University, Intelligent Semiconductor & Electronic Engineering

    University

  8. 2017.02 — 2019.02

    Seoul High School

    High school

    • Chased a pro-gamer career — and learned how deeply I can immerse myself in something I love.

Selected work 01—03

Boostcamp AI Tech 04—07

Toolbox

Agentic Tools
Claude Code Codex CLI Harness Engineering
AI & ML
Pytorch Numpy Pandas Polars Huggingface Streamlit
Languages & runtime
Python TypeScript Dart Flutter
Web & infrastructure
Google App Script Cloudflare Workers & Pages Supabase

Contact

limwoohyun01@gmail.com GitHub ↗