A snapshot of recent client engagements — what was built, the stack used, and the role I played.
Free 30-minute call. I listen, ask annoying questions, and send a written proposal within 48 hours — scope, timeline, fee, assumptions.
Quick architecture notes and key UI surfaces in Figma. We agree on a sharp first milestone before any production code is written.
Weekly demo of working software in your hands — never just slides. You own the repo from commit #1, code is reviewable from day one.
Deploy, monitor, hand off. Optional retainer for ongoing work — fixes, features, or a steady fractional-CTO seat.
PHP backend for an AI symptom-triage interface. Conversational endpoint, prompt structuring, and a clean REST surface for any frontend to plug into.
Strava integration that turns ride telemetry into structured coaching feedback. OAuth flow, activity ingestion, and rule-based training cues.
Web app teaching Modern Standard Arabic to Korean speakers — alphabet, vocabulary, daily phrases, and beginner grammar, with a quiz layer. PHP-only, no database; lessons authored as plain arrays.
Greenhouse monitoring system in C++ — environmental sensing, control loops, and configuration handling for an automated cultivation setup.
Federated learning, privacy attacks, and robustness — ongoing work at SKKU InfoLab.