Mingyum Kim

I am a full-stack engineer in Seoul. I build web apps, mobile apps and AI integrations, and I run two of my own apps on the App Store and Google Play. One of them ships in nine languages and had 26 paying users as of July 2026.

Before this I built software as an employee for several years. Working alone now is a choice: the person you email is the person who writes the code.

Nexybox is registered in Seoul as a sole proprietorship. Contracts, NDAs and invoices are signed by me, and the code you receive is yours.