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rayleighko/README.md

Ray (MyungJin Ko)

Engineer who solves business problems end to end — whatever the domain. I practice agentic engineering: AI agents implement, I own the design, review, and what ships. Currently: AI transformation (AX) at a payments company.

  • Co-founded and ran a bootstrapped B2B company for 5 years on revenue alone
  • Took a SaaS from zero to 20+ clients and 100K+ event attendees — with a team of three, infra under 1% of revenue
  • Ran development AI-native for 2 years — 300–400 PRs per week
  • 100+ government events, zero failures — handling 25K concurrent users packed into a single venue on congested networks

🥚 Side quest — making Hatchbar, a tiny idle game that lives under your taskbar. Launching Nov 9 on Steam.

Stack · TypeScript · Rust · Java/Spring · Kotlin · PostgreSQL · Cloudflare

📫 rayleighko2@gmail.com · LinkedIn · Medium

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