Leland Takamine is a mobile-focused engineering leader and founder with 11 years of experience building platform solutions that improve app quality and performance. As Cofounder & CEO of perf.dev (and previously Maestro), he helps teams eliminate user churn caused by subtle performance issues, turning performance into a standard rather than a luxury. His background includes leading mobile platform architecture and tooling at Uber, and hands-on work on open-source projects like a Kotlin/Java ADB-less device connector and the Maestro automation framework that support robust Android/iOS testing. Based in San Francisco, he combines product vision with deep engineering craft—often shipping low-level device and testing utilities that enable higher-level reliability guarantees.
A Kotlin/Java library to connect directly to an Android device without an adb binary or an ADB server
Role in this project:
Mobile Developer (Android)
Contributions:24 reviews, 147 commits, 29 PRs in 1 year 2 months
Contributions summary:Leland primarily worked on building a Kotlin/Java library for direct Android device connections. Their contributions focused on adding core modules, constants, and tests to the project. The user also implemented adb-related functionalities, including a reader, writer, and message queue, along with private key authentication and support for push/pull operations. They also added shell v2 implementation and test cases.
Contributions:335 reviews, 93 commits, 119 PRs in 6 months
Contributions summary:Leland primarily contributed to the mobile testing automation framework. Their work involved implementing Android-specific utilities for app file restoration, including enabling debuggable manifest settings. Further contributions included adding support for configuration files, integrating features such as nested run flows and enabling screen recording.
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