Jongmin Oh (오종민)
a problem-first AI Product Engineer.
I lead with 0→1 execution and fast prototyping
turning problems into working products quickly.
- AI Co-Founder @ Reppley (2022.10 – now) — character-persona chatbot, built 0→1
- AI Engineer @ INDJ (2021) — lyric emotion classification for music recommendation
- AI Engineer @ atommerce — emotional-support chatbot RONI
- LIKELION AI program, 1st batch
위로 챗봇 오복이 — empathetic comfort chatbot (graduation project)
- Evolved retrieval across 4 versions: Elasticsearch → SBERT embeddings → Faiss PQ + ONNX uint8 (7× faster) → hybrid (BM25 + dense, RRF)
- Hand-built a 35,363-sentence comfort dataset
널스체크 — burnout decision-support service for nurses (React 19 + TS)
ComfyUI API Server — Stable Diffusion serving engine, open-sourced (GPL-3.0, Docker/CUDA)
- 한국어 맞춤법 교정기 (
j5ng/et5-typos-corrector) — 111,795 downloads - 존댓말/반말 분류기 (
j5ng/kcbert-formal-classifier) — 38,641 downloads
- 딥러닝(BERT) + 감정 어휘 사전 결합 음원 가사 감정 분석 — 한국컴퓨터정보학회, 2022.07
- AI 기반 챗봇 학습 데이터 생성 방법 — KIPO 10-2757044 (registered 2025.01)
Python · FastAPI · AWS (Lambda/SAM · Redis · S3) · React
BERT/Transformers · SBERT · Faiss/ONNX · RAG · Prompt Engineering · Stable Diffusion/ComfyUI