Heeji Kang

I am a passionate Computer Science student with a strong foundation in CS principles and algorithms. I also enjoy algorithmic problem-solving, having solved over 400 problems on the competitive programming site, Baekjoon.

I am currently leading a capstone project on LLM watermarking, an area that aligns with my keen interest in generative AI. I genuinely hope to contribute to innovative projects.


 Education
  • Yonsei University (Seoul)
    B.S. in Computer Science
    Aug 2026 (Expected)
 Area of Interest
  • AI Agent and LLM Logic Design
  • MCP Server Development, Enhancing Generative AI Usability
  • Software and Service Design
 Projects
AI Finance Agent using MCP Server — Koscom AI Agent Challenge 2025 Finalist (Top 10 out of 72 teams)
Built an AI agent for stock recommendation using MCP Server and FastAPI (Python).
Implemented momentum-based scoring integrated with news sentiment analysis (XLM-RoBERTa Model).

• Tools: Python, Pandas, PyTorch, Docker

Sep. 2025 – Ongoing
Team Leader, LLM Watermark Project (Yonsei Univ.)
Currently designing a robust watermark injection algorithm for open source LLMs,
with the aim of a relative change in perplexity (PPL) of less than 5% compared to unwatermarked text.

• Tools: Python, PyTorch, Hugging Face Transformers
Aug. 2025 – Ongoing
 Technical Skills
Languages
C + + C Python
Frameworks & Libraries
PyTorch FastAPI Pandas XLM-RoBERTa
Tools & Platforms
Linux System Docker Git/GitHub Microsoft VS Code Xcode
 Languages
Korean

Native

English

IELTS 7.0
OPIc IH

 Activities & Engagements
Working Holiday Program — Sydney, Australia
Developed cross-cultural communication skills.

Mar. 2023 – Nov. 2023
Member — Bon Bon Volunteering Club (Yonsei Univ.)
Organized and hosted a university flea market.
Successfully raised funds, fully donated to local charity organizations.

Mar. 2021 – Jun. 2021
Academic Outreach Mentor — Coursework (Yonsei Univ.)
Provided educational mentoring to out-of-school youth.
Focused on instructional clarity and adapting to diverse learning environments.

Sep. 2018 – Dec. 2018
 Extracurricular

In my free time, I enjoy sketching and journaling as a way to relax, reflect, and maintain focus.

In my free time, I enjoy sketching and journaling as a way to relax, reflect, and maintain focus.