Jeffrey Chang

Jeffrey Chang

Android Engineer & Toolmaker

I’m an Android engineer. I’ve worked with Google, eBay, and startup teams, building mobile apps and maintaining the code behind them. I also build web applications and Python tools.

What I Work On

Android Development

Native Android apps with Kotlin and Jetpack Compose.

Architecture and Testing

Modular code, performance benchmarks, and tests that support ongoing changes.

Web and Python Tools

Small web applications and scripts for personal and operational tasks.

Outside Work

On the Trail

Completed Patagonia’s O Trek and hiked major sections of the John Muir Trail (Yosemite Valley to Bishop Pass).

Closer to Home

Long-distance running, cycling, cooking, and studying Chinese language and traditions. I’m an intermediate Spanish speaker.

Perspectives & Reading

I read about history, human behavior, and complex systems.

  • Thinking in Systems by Donella Meadows
  • Factfulness by Hans Rosling
  • 1984 by George Orwell