Yoshisato Yanagisawa
Software Engineer at Google Japan
Chiyoda, Japan
Summary
🤩
Rockstar🎓
Top SchoolYoshisato Yanagisawa is a seasoned software engineer with 13 years of experience at Google Japan, grounded in a Doctor of Science in Computer Science from Tokyo Institute of Technology. His background includes early research on high-availability systems at NTT and sustained contributions to large open-source projects, notably backend work on the Chromium codebase improving ServiceWorker behavior, metrics, and tracing for network operations. He combines deep systems-level expertise with practical production experience shipping browser and infrastructure features. Based in Chiyoda, Japan, he brings a researcher’s rigor to engineering problems and a track record of diagnosing subtle client/control-plane interactions in complex distributed environments.
13 years of coding experience
2 years of employment as a software developer
Doctor of Science, Computer Science, Doctor of Science, Computer Science at Tokyo Institute of Technology
Github Skills (16)
testing10
service-worker10
chromium10
test-framework10
javascript10
c-language10
webtest10
cprogramming-language10
web-standards10
browser-testing10
web-testing10
test-automation10
w3c9
network-protocol9
html9
Programming languages (11)
Github contributions (5)
chromium/chromium
Jul 2022 - Jan 2023
The official GitHub mirror of the Chromium source
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits in 6 months
Contributions summary:Yoshisato's primary contributions involved modifications to the Chromium source code, specifically focusing on ServiceWorker functionalities. Their work included implementing features related to ServiceWorker control over `srcdoc` iframes, adding checks for request methods within the `addRoutes()` function, and addressing issues related to the handling of ServiceWorker clients, particularly in the context of Chrome extensions. The user also introduced metrics and tracing events to better understand and debug the behavior of prefetch and other network-related operations.
chromiumgithub-mirrorchrome
WICG/service-worker-static-routing-api
May 2023 - Feb 2025
A repository for the ServiceWorker static routing API.
Contributions:23 reviews, 22 PRs, 29 pushes in 1 year 9 months
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