In 2014 I left Viettel and joined StoryTree. This is a startup in the US. Here we built a software called SimplePrints. It is a software that helps to create and print 1 photo book from personal photos on customers' phones. Now we are proud that SimplePrints is the No. 1 software on iOS and Android for printing photo books from phones. In this project, I'm the only one building Android application. I built it from 0, and now the application has hundreds of thousands of users. In this project, I applied the MVP model to the project, wrote unit-test. I also handle complex UI issues.

It is the project that helps shopping for busy people. It is a quite famous startup in Vietnam. Here I used Kotlin language to build Android application. I also have 1 year experience on Kotlin.

In Twenty Twelve, I joined Viettel group, this is the biggest technology corporation in Vietnam. I am the team leader of Android team in voice over IP project. It is a similar project like Viber or facebook messenger. Now this application has millions of users in Vietnam. Working on this project helped me learn about XMPP, and voice over IP technology.