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.
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Yonsei University (Seoul)B.S. in Computer ScienceAug 2026 (Expected)
Area of Interest
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AI Agent and LLM Logic Design
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MCP Server Development, Enhancing Generative AI Usability
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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
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
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.
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.
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.