About Me
Introduction
An AI Engineer who has designed and deployed services using diverse AI technologies including Vision, Audio, and LLM. Gained broad experience from service deployment to PoC across domains such as children's English learning, metaverse, and B2B solutions.
Built comprehensive experience across LLM, image, speech, and recommender systems — from model training and inference optimization to deployment. Capable of end-to-end development including from-scratch training pipelines and cloud deployment with Azure ML.
Also pursues maximizing development productivity with AI tools. Uses Claude Code, Codex, and GitHub Copilot to accelerate exploration, documentation, and implementation, then validates results against real use and operational constraints. Experienced not only in building AI, but also in working with AI.
Experience
Career
May 2026 - Present
Rye&Catchers
AI Research Engineer — AI Research Team
Security Anomaly Detection Systems
- [Security] Train and validate deep-learning anomaly-detection systems for first-stage quarantine of malicious behavior and PE files
- [Anomaly Detection] Apply LSTM likelihood-based scoring (NLL) to CERT user-behavior data and VAE reconstruction error with uncertainty quantification to BODMAS PE-file data
Feb 2026 - May 2026
Wemade Next
AI Engineer — MIR5 Programming Office, Server Team
MIR5
- [Unreal MCP] Built an MCP server enabling natural language CRUD operations on objects in Unreal Engine, designing a scalable architecture with async processing, N:M connection structure, and dynamic tool registration
- [MCP Client] Developed a lightweight client supporting chat and MCP integration using subscription-based models (Codex, GitHub Copilot, etc.) without API keys
2024.04 ~ 2025.06
Creverse (Chungdahm Learning)
AI Engineer — Nesto CV Division, AI Biz Team
AI Auto-Assessment System
- [MLOps] Designed, deployed, and operated an Azure ML Endpoint and Blob Storage inference pipeline used for presentation assessment by approximately 30K students monthly
- [LLM Agent] Built LangGraph student-and-evaluator agents to generate and review grade- and proficiency-conditioned synthetic English writing for international assessment exploration
- [Audio] Fine-tuned NVIDIA Parakeet STT on non-native children's speech data, reducing WER from 9.6% to 4.4%
- [Vision] Built MediaPipe-based gaze and posture assessment with 98.32% validation accuracy and 98.77% F1, configured for practical CPU inference
- [Vision] Used a quantized image-generation model during development to reduce GPU cost; added AWS image-safety detection and initial human review for a children's service
- [Search] Combined BM25 and vector retrieval; internal log-based evaluation showed up to ~20% fewer LLM calls at the same quality threshold
2022.10 ~ 2024.01
Metaverse World (Netmarble F&C)
AI Research Engineer — Dev Division 1, MetaWorld Dev Part
Grand Cross: MetaWorld
- [Vision] Prepared data, implemented and trained a GAN, and qualitatively evaluated a Face-to-Character PoC using a differentiable proxy to optimize character parameters
- [Vision] Qualitatively compared GAN, VAE, and autoencoder outputs; game-engine integration was not completed
- [Vision] Developed motion tracking by applying MediaPipe-based Pose Estimation to reflect user's real-time movements on 3D characters
2021.06 ~ 2022.04
Coconut Silo
AI Research Engineer — CTO Office
- [Recommender System] Embedded product descriptions using BERT and implemented a content-based filtering (CBF) recommendation system using inner product similarity
- [Vision] Fine-tuned YOLOv5 for ship and obstacle detection in maritime radar imagery
- [Anomaly Detection] Designed and implemented a vision-based anomaly detection system for real-time analysis of metal 3D printer process footage
2020.08 ~ 2021.05
Gaion Co., Ltd.
Data Scientist — Service Business Division
- [Data] Data collection and processing for government-funded project (Data Voucher) analytics
- [Planning] Planning and data collection/processing/analysis for an SME matching platform using trade data
Skills
Tech Stack
Frameworks & Libraries
Languages
Cloud & Infra
Data & Vision
Dev Tools
AI-Powered Dev
Others
Education
Education
Sogang University, AI·SW Graduate School
Master's degree in Data Science & Artificial Intelligence
2023.03 ~ 2026.02
Academic Excellence Scholarship (Fall 2023)
Thesis (2026.01)
줄거리 임베딩 결합을 통한 LightGCN 기반 영화 추천 시스템의 성능 향상 연구
Improving LightGCN-based Movie Recommendation Performance via Plot Embedding Integration
Advisor: Jeongmin So
Sejong University
Physics, B.S.