Hello, I'm Tim

I'm an Android Developer with 5 years of experience in Kotlin and Jetpack Compose. I help people solve real-world problems by building Android apps. I live in Walnut Creek, California with my wife and daughter.

I was born and grew up in Mongolia. I studied Computer Science at the University of Mittweida in Germany. I speak English, German, and Mongolian fluently, and a little Russian.

My Early Android Journey (2011-2012)

After leaving my corporate job in 2011, I began my Android development journey and released my first two apps in 2012, built with Java, XML, Eclipse, and the Android SDK plugin.

Local Marketplace App

A local marketplace app for buying and selling items in your neighborhood.

No download or code available

T-shirt Design App

Custom t-shirt design app featuring Mongolian famous designer @ido.dsnr

No download or code available

Modern Android Development (2018–2019)

In 2018, I learned Kotlin, Jetpack components, and MVVM architecture, along with Coroutines, Navigation, Material Design 2, Room, and WorkManager. I published two more apps in 2019. One of them was featured by a famous Android Youtuber on his channel.

Portfolio App (Java)

A Java-based Android portfolio app showcasing my development skills, built with standard SDK APIs and MVC architecture.

Github Live Demo

Portfolio App (Kotlin)

A Kotlin-based portfolio app using Jetpack Components, MVVM, Room, and Coroutines for seamless offline/online syncing.

Github Live Demo

Web Development (2022–2025)

To support my Android apps with modern backends and landing pages, I learned Next.js, React, and TailwindCSS. I built and published two full-stack Next.js apps that earned over 450 GitHub stars and Vercel swag, with my portfolio featured on WeAreDevelopers.com.

Full-Stack Blog App

A fully responsive full-stack blog app built with Next.js, React, TailwindCSS, and Supabase as backend. Based on Shadcn UI components.

Github Live Demo

Portfolio Website v3

Built with Next.js 16 and TailwindCSS. Designed and developed from the ground up, inspired by my own headshot. Features a modern, clean, and responsive design, with a focus on performance and SEO optimization.

Github Live Demo

Android Development Today (2025-Present)

After learning web development, I began exploring modern Android tools like Jetpack Compose, Hilt, Coroutines, Flow, Room, Ktor, Material 3, and more. I'm currently working on the following Android apps:

Sign Language (Kotlin)

Learn Mongolian sign language with interactive lessons.