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Seunghyeon Lee (이승현)

Full-stack / Interactive Systems / HCI

I have worked on web services, real-time apps, games, and XR projects.
I try to organize complicated data, state, and coordinate flows, then make systems where user input leads to actual changes on the screen.

Projects

Hangsha: Campus Event Calendar

Spring Boot / MySQL / Docker / React

Club Team Project
Crawled and normalized SNU extracurricular event data, and implemented search/detail APIs plus sorting and filtering based on user settings.

AreUComing: Real-time Location Sharing Service

Spring Boot / React / WebSocket / MySQL

Hackathon Project / 3rd Place
Built the backend APIs for location sharing sessions, including request, acceptance, progress, completion, location history, and history lookup.

XR Agent System Research

Unity / OpenXR / Gemini

Research Internship
Worked on 2D-3D alignment, object-based XR overlays, and evaluation of generated outputs in an XR agent system research project.

Chronos: Turn-based 3D Puzzle Game

Unity / Scrum / GitHub / Slack

Team Project
Planned and implemented the main gameplay systems, including turn control, state logs, rewind, clone replay, and object interactions.

Abandoned Hospital Escape: VR Horror Game

Unity / XR Interaction Toolkit / Meta Quest 2

Team Project
Designed and implemented UI, visual effects, camera transitions, and cutscene flow for a VR environment.

ThinkFlow: Memo & Task Management App

React / Express / Prisma / Docker / PostgreSQL

Personal Project
Designed and built a full-stack app that connects memos, tasks, and retrospectives into one flow.

Experience

Republic of Korea Air Force, Air Mobility & Reconnaissance Command

Intelligence Situation Duty / 2022 - 2023

Worked in an intelligence situation role, monitoring situations in shifts and supporting reports.

SNU WaffleStudio (Web Development Club)

Frontend / Backend / Team Projects / CI/CD / 2025 - Present

Completed React frontend and Spring Boot backend seminar tracks, then used them in team projects.
Experienced a broad range of web service development, including API design, authentication, state management, and deployment.

SNU HCS Lab Undergraduate Research Intern

HCI / XR / AI Application / Winter 2025

Joined an XR agent system research project.
Worked on 2D-3D alignment, object-based XR overlays, and evaluation of response and visual generation quality.

Education

Waseda University

Exchange Student / Spring 2025

Took all 8 courses in Japanese, including 5 courses related to computer science.

GPA: 3.7/4.0 (14 credits)

Seoul National University

College of Liberal Studies / 2020 - Present (Expected Graduation: February 2027)

Majoring in Computer Science and Engineering and Linguistics.

GPA: 4.02/4.3 (through Fall 2025)

Daejeon Foreign Language High School

2017 - 2019

Department of Spanish

Skills

Backend

  • Spring Boot
  • Java
  • Kotlin
  • REST API
  • WebSocket
  • SQL

Frontend

  • React
  • JavaScript
  • TypeScript
  • HTML/CSS

Interactive

  • Unity
  • C#
  • XR Interaction Toolkit
  • OpenXR

Tools

  • Git
  • Docker
  • GitHub Actions
  • WSL

Languages

  • Korean: Native
  • English: Advanced (TOEIC 990)
  • Japanese: Advanced (JLPT N1 170/180)
  • Spanish: Intermediate (DELE B1)