Lee Sang-Heon
Full Stack Developer & Game Programmer
A passionate full-stack developer specializing in game programming, web development, and Discord bot creation. I build Unity-based games and web applications using React and Java, while actively exploring and implementing emerging technologies from communities like X and GeekNews.
About Me
I bridge the worlds of game and web development with a focus on exceptional user experiences. I actively explore cutting-edge technologies and deliver innovative solutions through creative problem-solving.
Game Development
Experienced in game development using Unity, C#, and WebGL, as well as in game security.
Web Development
Pursuing full-stack web development with React, Java, and FastAPI, focusing on user-centered UI/UX design.
Chatbot Development
Creating services that prioritize user interaction through Discord bot and KakaoTalk bot development.
Continuous Learning
Exploring the latest tech trends from X(Twitter) and GeekNews, and applying them to real projects.
Skills & Technologies
Delivering effective solutions with a versatile tech stack
Indicates frequently used technologies
Frameworks & Libraries
Languages
Tools & Platforms
Projects
Projects I've built, shipped, and learned from.
AngelicBusterBot(Abbot)
AngelicBusterBot(Abbot)
2022.04 - Currently in Service
A Discord chatbot that provides MapleStory-related information to users. Utilizes Nexon Open API to deliver real-time game information, character search, and guild details. Has been in service for approximately 3 years, currently serving over 180,000 users across about 4,700 servers.
Federation of Korean Trade Unions Daegu Regional Headquarters Website
Federation of Korean Trade Unions Daegu Regional Headquarters Website
2025.03 - 2025.06
Official website for the Daegu branch of the Federation of Korean Trade Unions. Mainly focused on course registration functionality, handled overall website development as commissioned work. Key development features included full frontend and backend development of the course registration system and admin system.
StockTalk
StockTalk
2023.09 - 2023.12
An AI-powered KakaoTalk chatbot that predicts daily closing price fluctuations compared to the previous day's closing price using hourly news articles and stock price movements. Implemented with a Python Flask server connected to Kakao i OpenBuilder to analyze user speech intent for more precise operations. Dynamically generates graph images based on AI-generated results and attaches them to custom-designed KakaoTalk messages for seamless user experience.
COCA : Group and Personal Schedule Management Sharing Service
COCA : Group and Personal Schedule Management Sharing Service
2024.02 - 2024.06
A community-based collaborative calendar that helps manage group and personal schedules and finds available time slots among group members. Designed and implemented an intuitive UI to create a user-friendly service. Utilized both brute-force and interval merging algorithms appropriately to find available time slots as quickly as possible.
Gemini Tetris
Gemini Tetris
2022.09
A fan game for the virtual group RE:REVOLUTION. Developed as a commissioned birthday fan game for a group member. Developed using Unity and built with WebGL to allow gameplay on the web. Added button UI for mobile environments in addition to PC to ensure playability across various platforms.
Experience
Professional experience and key accomplishments.
Research Engineer
Wellbia.com Co., Ltd.
Vice President & Reverse Engineering Mentor
Kumoh National Institute of Technology Information Security Club BOSS
Undergraduate Researcher
Signal Processing and Intelligent Network Lab
Achievements & Licenses
Recognition, certifications, and key accomplishments
KIT Engineering Fair Bronze Prize
Kumoh National Institute of Technology LINC3.0 Project Group
November 2023
Information Processing Engineer
Human Resources Development Service of Korea
September 2024
JLPT N2
Japan Foundation
January 2025
CO-UP CAMPUS CHATBOT HACKATHON Participation
Ministry of Education and 6 Other Organizations
January 2024
Education
Academic background and training
July 2025 - Present
In ProgressSSAFY
14th Cohort
Mobile Track
March 2019 - February 2025
GraduatedKumoh National Institute of Technology
Bachelor of Engineering
Department of Computer Software Engineering
March 2016 - February 2019
GraduatedDaegu Siji High School
High School Diploma
Science Track
Let's Work Together
Open to project inquiries, collaboration proposals, and job opportunities.
© 2026 Lee Sang-Heon. All rights reserved.
Built with Next.js, FastAPI & Claude Code.