Tien Do Nam is Founder of LocalSend, a privacy-first open-source file transfer app used by over 1 million monthly active users across 100+ countries. He is a Berlin-based founder and software engineer with 7 years of experience building high-scale consumer apps from scratch.

Tien holds a BSc in Computer Science from Otto-von-Guericke-Universität Magdeburg and began coding at age 14. He created Notan, the #1 grade-tracking app in the DACH region with 700k+ MAU and 150k students daily.

He specializes in Flutter and Java/Spring and delivers full-stack systems that emphasize clean architecture, performance, and scalability. His work has been featured on Hacker News, GitHub Trending, and Product Hunt.

LocalSend was founded in 2022 as an open source project. Currently focused on AI in education, he builds intelligent, personalized learning tools informed by product-led growth and open-source distribution.

LocalSend is a free, open-source app that allows you to securely share files and messages with nearby devices over your local network without needing an internet connection, and doesn't require third-party servers. With over 8 million downloads globally, LocalSend enables fast, encrypted file sharing.