Hyun Jae Moon — AI Engineer & Founder of MoonAI
Hyun Jae Moon is a Korean software engineer and the founder 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 South Korea and the United States, and works in both English and Korean.
MoonAI
MoonAI is a boutique AI delivery shop founded by Hyun Jae Moon, 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 board 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