Backend and AI systems engineer studying Computer Science at Soongsil University. I build products where model output meets real data, explicit user decisions, and systems that must keep working after the demo.

Website · Email · 한국어

• Founding Engineer at TrabyOS · A voice-first trading workspace for macOS. Users ask for live market context, review a complete order card, and approve, correct, or cancel a paper trade by voice. Website · Free test build
• Software Engineer Intern at Bizarre Cube AI (MXN Commerce Group) · Production AI agents for fashion e-commerce operations. GitHub
• B.S. in Computer Science, Soongsil University · 2022–present. Coursework

Students can search university information and work with their own academic, LMS, and library data from one web app or natural-language agent. The system exposes 52 MCP tools with an explicit approval boundary and runs across ssuAI, ssuMCP, ssuAgent, and ssu-ai-service. Open the service

Spring Boot LangGraph Next.js Kubernetes

A summer survival map that finds nearby shade and heat-relief facilities among 150k+ public points of interest. Radius and nearest-neighbor search are backed by PostGIS, while live community reports arrive without refreshing the map. Open the map

Spring Boot PostGIS SSE Terraform

Students compare their circumstances with dormitory admission rules, see why a requirement passes or fails, and then continue into roommate discovery. Eight lifestyle dimensions power explainable recommendations; recruitment posts, applications, approvals, one-to-one chat, and group chat turn a recommendation into an actual room. Open Cham Domi

Spring Boot Next.js MySQL WebSocket

An early founder describes a problem and solution once. The service creates a public landing page, five social cards, copy, and a Meta ad from one validation hypothesis, then returns actual Insights, visits, and consented reservations for the founder's next decision. Open the service · Source

Next.js Supabase Anthropic Meta Marketing API

A local-first desktop workspace for HWP, Office, and PDF. Users ask across a folder, inspect source evidence and document relationships, then approve format-aware edits that create and verify a new file instead of silently overwriting the original. Source

Electron FastAPI Gemma 4 SQLite

A planning and discovery service built from Korea Tourism Organization data. It forecasts city- or county-wide visitor-days available 30 days before a festival—not festival attendance—and shows planners a range, contributing factors, and what-if comparisons. The adopted seasonal baseline plus LightGBM residual model reached 3.939% WAPE on a time holdout; generated reports reject figures absent from the model input.

FastAPI LightGBM Next.js Claude

Merged upstream work. Browse all pull requests

• psycopg #1407 · Reproduced a swallowed cancellation in AsyncConnectionPool.getconn() and added a deterministic regression test; verified the final fix with the maintainer.
• Ouroboros #2365 · Fixed cancellation cleanup for an in-progress MCP client connection and added six regression tests.
• Caveman #1013 · Fixed --force failing to refresh editor rule files after initialization; authorship was preserved in the merged follow-up.

• 🏆 Manifest Special Award · UNITHON 2026 · marketvalley
• 🥈 Silver Prize · Soongsil University CS Software Competition 2026 · Cham Domi
• 🏅 Excellence Award · Soongsil University Solved Code Algorithm Competition 2025