Shunya Shishido
Senior Software Engineer at Google
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolShunya Shishido is a Senior Software Engineer at Google in Tokyo with 13 years building high-performance web platforms, from real-time community systems and large news PWAs to core browser features in Chromium. He blends hands-on engineering—implementing and stabilizing service worker behavior in Chromium and adding web-platform-tests for standards conformance—with partner-facing roles as a technical solutions consultant, translating web standards into measurable product improvements. His work has driven tangible metrics (e.g., major speed and conversion gains on Nikkei’s digital edition) and been showcased at events like Google I/O and Chrome Dev Summit. An active open-source contributor and Chromium committer, he brings deep expertise in modern web APIs, test automation, and performance tooling, plus a knack for turning spec-level insights into production-quality code.
13 years of coding experience
9 years of employment as a software developer
Bachelor, Japanese Language and Literature, Bachelor, Japanese Language and Literature at Keio University
Github Skills (16)
service-worker10
debugging10
debug10
chromium10
javascript10
c-language10
web-development10
cprogramming-language10
web-standards10
multithreading10
test-automation10
testing10
web-development-project9
html8
w3c8
Programming languages (13)
Github contributions (5)
chromium/chromium
Dec 2022 - Jan 2023
The official GitHub mirror of the Chromium source
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits in 1 month
Contributions summary:Shunya primarily contributed to the Chromium project by implementing and debugging service worker functionality. Their work involved adding thread checkers and crash keys to ensure the stability of `ServiceWorkerData` and related components, addressing potential null pointer exceptions. They also introduced a fake service worker registration mechanism for the SyntheticResponse feature, enabling navigation and interactions with service workers. Furthermore, they have added metrics and made speculative fixes in the `DidStartServiceWorkerContextOnWorkerThread` function.
chromiumgithub-mirrorchrome
web-platform-tests/wpt
Sep 2022 - Sep 2022
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:10 reviews, 1 commit, 1 PR in 1 day
Contributions summary:Shunya primarily contributes to the web-platform-tests/wpt repository by adding and refactoring web platform tests (WPTs). Their work focuses on testing various web standards and features, including service workers, static routing APIs, and the behavior of script elements. They consistently add tests to cover new features, bug fixes, and edge cases, ensuring the web platform's conformance to specifications. The user also demonstrates proficiency in test automation and framework utilization.
microsoft-edgetest-runnerspecssafarifirefox
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