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 trading assistant that places real crypto trades. Say an order for spot or perpetual futures, and TrabyOS shows it as an order card and executes it on the exchange once you approve. You can also ask for prices, your balance, or the news. Website
• 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

• 🏆 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

Contributions that landed upstream. Browse all pull requests

• OpenTelemetry Python #5681 · Added a shared CapturingSampler to opentelemetry-test-utils at a maintainer's request, so instrumentation tests can check the attributes a sampler receives at span start.
• Micrometer #7925 · Documented custom tags for Java HttpClient observations, with the examples taken from a compiled test that checks the recorded custom and default tags.
• 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.
• psycopg #1345 · Reproduced a swallowed cancellation in AsyncConnectionPool.getconn() and verified the maintainer's fix in #1407 before release.

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