Yuki Hamada
Senior Software Engineer at Google
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolYuki Hamada is a Senior Software Engineer at Google based in Seattle with eight years of experience building and hardening Android tooling and test frameworks. He has deep expertise in Android development and testing, contributing notable fixes and UX improvements to JetBrains' Android plugin for IntelliJ and stabilizing core testing primitives in the android-test framework, including ActivityScenario lifecycle and Kotlin ergonomics. His work focuses on making developer workflows more reliable—fixing race conditions, improving Gradle-integrated test runs, and adding support for benchmark tests and custom intents. Yuki’s background blends practical engineering with a foundation in electrical and sustainable energy engineering from Osaka-area universities, which gives him a systems-oriented perspective on software reliability. He’s the kind of engineer who improves invisible developer experiences—reducing flakes and edge-case failures that quietly raise productivity across large teams.
8 years of coding experience
Bachelor of Engineering (B.E.), Sustainable Energy and Environmental Engineering, Bachelor of Engineering (B.E.), Sustainable Energy and Environmental Engineering at Osaka UniversityFoundation degree, Electrical Engineering and Computer Science Course, Foundation degree, Electrical Engineering and Computer Science Course at Osaka Prefecture University College of Technology
Japanese, English
Github Skills (14)
testing10
kotlin10
plugin-development10
android-test10
javas10
android-lifecycle10
android-testing10
gradlew10
android10
intellij-idea10
java10
plugin10
gradle10
junit7
Programming languages (5)
Github contributions (5)
android/android-test
Sep 2018 - Aug 2022
An extensive framework for testing Android apps
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:1 review, 50 commits, 3 PRs in 3 years 11 months
Contributions summary:Yuki primarily contributed to the `android-test` repository by enhancing the `ActivityScenario` class, a core component for testing Android applications. Their work involved stabilizing the `moveToState` and `launch` implementations, including fixes for helper activities and race conditions. The user also introduced Kotlin extensions for `ActivityScenario`, added features like `getResult()`, support for custom start intents and activity options, and addressed a flaky test case, demonstrating expertise in Android testing and lifecycle management. Moreover, the user has made the class auto-closeable and deprecated the ActivityTestRule.
android-appsbazeltestingandroidkotlin
JetBrains/android
Jan 2019 - Sep 2021
Android Plugin for IntelliJ IDEA. This repository is a subset of https://git.jetbrains.org/?p=idea/android.git cut according to GitHub file size limitations.
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:434 commits in 2 years 9 months
Contributions summary:Yuki primarily worked on improving the Android plugin for IntelliJ IDEA, focusing on the test execution flow and user experience. Their contributions involved fixing issues related to test cancellation, updating the test results view to accurately reflect test statuses, and providing better error handling and UI improvements. Additionally, the user implemented features to support benchmark tests and improve the reliability of the test run process, particularly in relation to Gradle integration.
file-sizeandroid-studiointellij-ideaandroid-pluginandroid
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