Niên Lê

Senior Android Developer with 10+ years building and scaling production mobile

applications for fintech, crypto and property platforms. I lead Android architecture

and delivery—implementing secure authentication, real-time trading flows, wallet

features, offline-first persistence, and performance tuning—while establishing CI/CD,

code-review best practices, and mentoring engineers. Expert in Kotlin, Jetpack

Compose, Coroutines/Flow, Hilt, Clean Architecture and Flutter; experienced

collaborating remotely with product teams and customers across Asia and the EU.

I started my career working on media and consumer apps, building video pipelines and social features. That helped me build a strong foundation in Android fundamentals.

Then I moved into blockchain at TomoChain Lab, where I developed a non-custodial crypto wallet. That was when I started working deeply with smart contracts, transaction signing, encryption, and secure key storage.

After that, I worked on property tech platforms like Hmlet and Habyt, where I focused more on scalable architecture, offline-first design, and cross-functional collaboration.

Most recently, at OANDA Coinpass, I worked on crypto and forex trading platforms serving the UK market. My responsibility was not only coding but also owning architecture, improving performance, establishing best practices, and mentoring engineers.

So overall, my career moved from feature development to architecture ownership and technical leadership.

Engineer, HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY