Backend-first Developer · Building toward Fintech AI & Data-driven Services CS Student @ Dongduk Women's University (Feb 2027) · Seoul, South Korea
Backend engineering is my foundation — I design APIs and data flows first, then build the frontend that consumes them. Recently expanding into React/TypeScript while shipping projects that combine backend systems with practical AI features (translation, financial data, service automation). Aiming toward IT roles at securities firms working with financial data and AI.
Backend
Frontend
Tools
| Project | Stack | Description |
|---|---|---|
| 트라이나 · Tryna | React 19 · TypeScript · TanStack Query · Zustand | Personal-assistant calendar. Owned the frontend API infra — auth flow, 401 retry queueing — and cut home-screen API calls from 30+ to 3 by renegotiating the response schema with backend. UMC 10th, 2026.07–08. |
| 반려동물 응급도 판단 서비스 · BabyMungsoo | Spring Boot · PostgreSQL · Spring Security · Claude API | AI agent that judges pet emergency severity and recommends nearby vets. Backend for hospital-finder & analysis-record domains; designed the photo–consultation-session data flow with the backend team. 2026.04– (ongoing). |
| Stock Lens | Java · Spring Boot · MySQL · OAuth2 | Solo project — Korean stock dashboard with KIS Open API integration, Google OAuth2, local AI model (Ollama) stock recommendations, and Chart.js visualization. 2026.02– (ongoing). |
| 맞춤 · CustomFit | Python · Django REST Framework · React | Personalized nutrition-comparison service. Backend lead — JWT auth, Django Signals for auto-generated recommendation profiles, custom user model. 멋쟁이사자처럼 12th hackathon, 2024.07–08. |
- Backend systems for financial data & AI-integrated services
- AI-assisted data pipelines and their role in real product decisions
- API design and data-flow optimization
- 📍 Seoul, South Korea
- 💼 stu2440@gmail.com
- ✍️ Tech Blog
- 🐙 @yuyeon48