Projects
Projects
Work where I didn't stop at 'it runs' — digging into performance, structure, and the root cause of failures.
HeatTrip
An emotion-centered mobile travel service that recommends destinations based on the user's emotional state and connects itineraries, emotion diaries and retrospectives. I staged the LLM recommendation for cost/failure isolation and designed search, pagination and observability myself.
Staged the LLM recommendation to isolate cost/failure propagation — Excellence Award at the Korea Tourism competition
BARO FARM
Backend for an agri-fisheries commerce service. I owned the auth/authorization flow in a Spring Cloud Gateway·Redis·Kafka·OPA-based MSA, and resolved intermittent 403s at the structural root cause rather than the surface symptom.
Diagnosed intermittent 403s as a "permission-vs-user-state mismatch" structural problem