<Hyun/>
— ABOUT
Motivated and self-driven Full Stack Developer
with hands-on experience in building web applications
using Java, Spring Boot, React, and Next.js.
Proficient in Java, TypeScript, and SQL.
Passionate about clean code and continuous learning.
with hands-on experience in building web applications
using Java, Spring Boot, React, and Next.js.
Proficient in Java, TypeScript, and SQL.
Passionate about clean code and continuous learning.
"Clean code always looks like it was written by someone who cares."
- Robert C. Martin (Clean Code)
- Robert C. Martin (Clean Code)
Download Resume
Clean Code
Writing maintainable and scalable code
Web Application
Full-stack web development expertise
Backend System
Robust API development and database design
Responsive Design
Mobile-first approach to UI/UX
— EXPERIENCE
Web Coordinator Intern
TRTCLE
Dec 2024 - Apr 2025
Remote
•
Maintained 300+ course portfolio, ensuring accuracy,
positively impacting course enrollment and client retention
•
Increased data processing efficiency by 35%
through automated Excel workflow templates
•
Collaborated in a 5-person agile development team to enhance
website content and functionality, improving the user experience
Technologies Used
Excel
Python
Jira
Confluence
Software Engineer Intern
The Catholic Univ. of Korea, Seoul St. Mary's Hospital
Jun 2024 - Dec 2024
Remote
•
Automated export of 100+ weekly patient records to Excel,
cutting manual data entry by 65% and improving data accuracy
•
Improved patient record retrieval performance by introducing
database indexing, cutting query latency by 40%
•
Applied Domain-Driven Design to structure medical processes,
improving maintainability while reducing codebase size by 25%
•
Achieved zero downtime deployments by applying a Blue/Green
deployment strategy with GitHub Actions and Go script
Technologies Used
Java
Spring Boot
Spring Security
Spring Data JPA
QueryDSL
MySQL
AWS EC2
Docker
Nginx
— SKILLS
Java
Kotlin
Python
JavaScript
TypeScript
SQL
Spring Boot
Spring Data JPA
Spring Security
Querydsl
MySQL
PostgreSQL
MongoDB
Redis
React
Next.js
Angular
HTML
CSS
Tailwind CSS
Docker
Figma— PROJECTS
Menteetor - Mentor-Mentee Matching Website
Mentorship matching platform for 309 Korean universities, implementing university email authentication for secure, student-only access
KEY FEATURES
•
University-verified accounts with secure authentication using JWT
•
Real-time chat with file & image sharing
•
Infinite scrolling for seamless content browsing
•
Trending keywords for popular topics discovery
•
Push notifications for chat and mentoring updates
TECH STACK
Java
Spring
Spring Security
MySQL
Redis
FCM
WebSocket
ElasticSearch
EC2 RDS S3
Docker
Animalysis - Fitness Management Website for Pets
Helps pet owners manage health records, track wellness trends, and receive personalized workout, diet, and supplement suggestions for each animal.
KEY FEATURES
•
Health record management for each pet (e.g., vaccination history)
•
Graph-based tracking of health and fitness trends
•
Personalized workout, meal, and supplement suggestions
•
PDF export of health records for vet visits
TECH STACK
TypeScript
React
Next.js
Supabase
PostgreSQL
Tailwind CSS
CityLink - AI-Powered Travel Assistant Platform
Smartly suggests destinations and nearby cities, auto-connects travelers in real time, and provides AI-driven tips on attractions, restaurants, and hidden gems.
KEY FEATURES
•
Smart destination search with Google Maps integration
•
Real-time chatrooms connecting travelers visiting the same location
•
AI-powered recommendations for attractions, dining, and hidden gems
•
Personalized chatbot guidance with direct navigation links
TECH STACK
JavaScript
React
Python
Flask
WebSocket
OpenAI API
Google Maps API
CodeMate - Personal Code Mentor System
CodeMate connects with GitHub to analyze, improve, and polish code with AI assistance, while building stronger code intuition through challenges and gamified practice.
KEY FEATURES
•
GitHub integration for instant code analysis
•
AI-powered suggestions to refine code
•
Practice optimization through challenges
•
Gamified learning with progress tracking
TECH STACK
Java
Spring
SQLite
Auth0
SonarQube
Git API
OpenAI API
Docker
View More on GitHub
— GET IN TOUCH
Let's connect!
I'm always open to exciting opportunities — whether
it's full-time roles, freelance projects, tech
collaborations, or even a friendly conversation.
it's full-time roles, freelance projects, tech
collaborations, or even a friendly conversation.
Reach Me on LinkedIn