Cybersecurity · DevOps · Webservices · Developer tooling
I am a Korean software engineer based in Colorado, from Seoul. At Soundpatrol, I work on cybersecurity, DevOps, webservices, and developer tooling, primarily using Rust, Python, PostgreSQL, Kubernetes, and GCP.
I believe in building services that make effective use of modern hardware and programming languages. I enjoy working through concurrency, database queries, memory use, and deployment, and I want to work with people who take pride in their craft.
I develop backend services and internal tools, maintain cloud infrastructure and deployment pipelines, and work on monitoring, access controls, and other cybersecurity measures in my role as DevOps lead and Rust Engineer.
- Samsung C&T HQ digital twin: Led Rust/Axum backend and infrastructure development for a system integrating thousands of building sensors. Simplified the architecture and reduced monthly cloud spending from approximately $5,000 to $150; brought many previously multi-second P99 request paths into single- or double-digit milliseconds.
- Hyundai, Kia, and Genesis official apps: Contributed Java/Spring Boot APIs, integrations, and Rust/Python data pipelines for official automotive smartphone application services.
- YouTube analytics for Pampam Inc.: Designed a Rust/PostgreSQL backend and data-collection workflows covering tens of millions of comments and users, with model-assisted summaries and deployment on AWS and GCP.
| Project | What it does |
|---|---|
| Sillok | Rust CLI for structured work records, append-only event history, indexed Turso/SQLite projections, and Git-backed synchronization across machines. |
| EU5 Location DB | Rust and Slint desktop/WebAssembly browser for static map data, with compressed datasets, precomputed indexes, searchable filters, and resizable tables. |
| cyhdev.com | Rust/Axum, PostgreSQL, and SolidJS publishing site with photography, discussions, chat, and browser demonstrations. |
| oohid | Rust UUID generator with configurable formatting, file output, and optional duplicate checking. |
B.Eng. in Software Engineering from Sungkyunkwan University. Published research on Korean-language social-media sentiment analysis at IMCOM 2023. Native Korean and fluent English; earlier work includes KATUSA service with the U.S. Army's 2nd Infantry Division, interpretation, and journalism. Outside software, I enjoy photography and follow international affairs and human rights.