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 on both stores and has been live since 2024.

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.

When a project needs a specialist, I bring in a vetted one. You still deal only with me, and I stay responsible for the result.

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