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Ph.D. in Intelligence and Information

Department of Intelligence and Information, Seoul National University, Korea

• Supervised by Prof. Nojun Kwak

B.S. in Food Science and Biotechnology (Minor: Industrial Engineering)

Department of Food and Animal Biotechnology, Seoul National University, Korea

Applied Research Scientist

Krafton AI

• Developing PUBG ALLY, a real-time embodied companion agent that can play games alongside users. Early demo was showcased at CES 2025 and covered by The Verge.

  • Designed an embodied agent workflow for fast real-time gameplay with a dialogue/planning module over in-game voice chat.
  • Built a data flywheel with human feedback and synthetic data augmentation for continual updates.
  • Training via imitation learning and model distillation of small language models for real-time inference on consumer GPUs using quantization.

AI Engineer Intern

Naver Webtoon

• Contributed to Character Chat, a production-scale AI chatbot mimicking webtoon character personalities and speech styles, used by over 6M users (media release).

  • Led prompt engineering for LLM-as-evaluator workflows to measure and reduce out-of-character responses.
  • Designed and implemented data collection, preprocessing, and pretraining pipelines for an in-house small Korean language model.

  Conducted research in copyright protection:

  • LLM watermarking and copyright protection for text-to-image models (NAACL 2024, CVPR 2025).
  • Placed 3rd in “N Innovation 2023”, an internal competition for novel AI-driven services across Naver.