Yuki Kokubun
PMO at コインチェック株式会社
Sagamihara, Japan
Summary
👤
Senior🎓
Top SchoolYuki Kokubun is a pragmatic PMO and Software Engineer in Test with 14 years of experience focused on making "the right things the right way" through testable architecture, shift-left testing, and tooling. Having led SDET teams at DeNA and introduced unit-testing culture as an iOS engineer, he combines hands-on engineering with team leadership and process improvement. He contributes to notable open-source testing and parsing projects—including test infrastructure for swift-syntax—and authors tools and examples that demonstrate refactoring, static analysis, and formal-methods thinking. Based in Sagamihara, Japan, Yuki holds an MEng in Computer Software Engineering and pursues formal methods since 2019, applying that research mindset to practical quality and automation challenges in game and web/mobile development.
14 years of coding experience
Master of Engineering - MEng, Computer Software Engineering, Master of Engineering - MEng, Computer Software Engineering at The University of Electro-CommunicationsElectrical and Electronics Engineering, Electrical and Electronics Engineering at Tokyo National College of Technology
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (7)
swift10
javascript10
xctest10
test-automation10
testing10
nodejs9
unit-testing9
Programming languages (19)
Github contributions (5)
gulp-community/gulp-less
Feb 2015 - Feb 2015
A LESS plugin for Gulp - latest is 3.5.0 on npm
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:9 commits, 4 PRs, 8 comments in 2 days
Contributions summary:Yuki primarily focused on fixing and improving the test suite for the gulp-less plugin. Their commits addressed issues related to timeout handling within the testing framework and included merging changes to the test files. They also contributed to a test case for the `less.reporter` function, indicating involvement in testing error reporting mechanisms. This focus on test code suggests a role centered on ensuring the plugin's quality and reliability through automated testing.
less-plugingulp-plugingulpnpm
swiftlang/swift-syntax
Feb 2019 - Mar 2019
A set of Swift libraries for parsing, inspecting, generating, and transforming Swift source code.
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:5 commits, 1 PR, 6 comments in 10 days
Contributions summary:Yuki primarily contributed to the testing infrastructure and quality assurance of the SwiftSyntax project. They added tests to verify the conformance to `CustomReflectable` protocol and to validate the dumped results of the syntax tree. These tests involved the use of `SwiftSyntax` specific methods and objects and ensured the correct behavior of parsing and representation of swift code.
bazelswiftbazel-rulesparsing
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