Hyun Jae Moon — Forward Deployed AI Engineer at CJ Olive Young
Hyun Jae Moon is a Korean software engineer working as a Forward Deployed AI Engineer on the AX (AI Transformation) Engineering Team at CJ Olive Young in Seoul. He is also the founder and owner of MoonAI, a boutique AI delivery shop serving businesses in Korea and the United States. He specializes in LLM-based application development, agentic AI systems, CI/CD pipelines, and full-stack web development, building production AI products end to end on Google Cloud (Cloud Run, Agent Engine) and AWS. His stack spans Rust, Python, Flutter, React, FastAPI, LangChain, LangGraph, and NL2SQL systems. He previously contributed to the Android Open Source Project (AOSP) at Google. He is based in Seoul, South Korea, and works in both English and Korean.
MoonAI
MoonAI is a boutique AI delivery shop founded by Hyun Jae Moon in 2025 and still owned by him, offering fixed-price audit, MVP, and retainer engagements for Korean SMBs and US-based businesses — building agentic AI products, LLM-powered workflows, and production-ready web applications.
Projects
- PlayShelf — AI-powered video game suggestion service.
- Python Testing Agent — AI agent that runs and evaluates Python tests.
- Yushin Melamine AI Service — AI service delivered for a manufacturing client.
- Resume Chatbot — conversational AI for exploring a candidate's background.
Research
- Designing Free-Form Stories with LLMs in Video Game Development: Reactive Human-in-the-Loop and Agentic Workflows
- The Fun Randomness Algorithm: A Theory on Intentional Ranking Balance in Nintendo's Mario Party and its Implications for UX Engineering
- The Art of Immersion: Music, Camera, and Gradual Instruction in Video Games