Introduction
I’m a Design Engineer with 5+ years of experience building web apps with Next.js, Tailwind CSS, and TypeScript, and Android apps with Kotlin and Jetpack Compose.
I currently live in the San Francisco Bay Area with my family. I am originally from Mongolia and studied Computer Science in Germany. I speak English, German, and Mongolian, and I also understand some Russian.
How I got started
After college, I started with Android development using my Java and XML background. I published several apps on the Google Play Store, building with Java, Kotlin, XML, Material Design, and Jetpack components.
Web Development
I started learning Next.js and Tailwind CSS in late 2022 while working full-time at a factory. It was difficult to balance both, so I quit my job and moved to Mongolia for a lower cost of living. I spent three focused months there learning Next.js, React, TypeScript, and Tailwind CSS.
During that time, I met my wife. We got married, our daughter was born, and we came back to the U.S. in late 2023. I kept learning and building side projects, including portfolio apps. One of my projects now has 460+ stars on GitHub, and another was mentioned on WeAreDevelopers.com.
Today
In 2026, I completed my first paid client project with Next.js, React, TypeScript, and Tailwind CSS: a restaurant website with client login and a booking system. You can visit the live site at choijin.mn.
I am currently building my first SaaS product, Menu CEO, an online restaurant menu platform.
To learn more, visit my experience and education pages.
