Stefan Zager
Software Engineer at Google
Oakland, California, United States
Summary
🤩
Rockstar🎓
Top SchoolStefan Zager is a seasoned software engineer with 12+ years building core browser and web platform features on Chromium at Google, following earlier systems work in CAD at AMD. He specializes in browser internals and full-stack engineering, with hands-on contributions to window management, race condition fixes, and performance-focused refactors across content, renderer, and browser layers. An active open-source contributor, Stefan has improved documentation and spec-accurate types for IntersectionObserver and strengthened Web Platform Tests to make API behavior more reliable across implementations. Based in Oakland and holding a BA in Computer Science and History from UC Berkeley, he blends deep technical rigor with a long view on platform correctness and interoperability. Less obvious: his background in CAD engineering gives him a systems-oriented attention to detail that surfaces in low-level concurrency and testing work.
12 years of coding experience
B.A., Computer Science and History, B.A., Computer Science and History at University of California, Berkeley
Github Skills (22)
javascript10
c-language10
testing10
rendering10
test-runner10
chromium10
render10
api-documentation10
automation10
intersection-observer10
web-standards10
html10
window-management10
automations10
cprogramming-language10
Programming languages (8)
Github contributions (5)
w3c/IntersectionObserver
Dec 2015 - Apr 2022
Intersection Observer
Role in this project:
Front-end Developer
Front-end DeveloperContributions:30 reviews, 157 commits, 112 PRs in 6 years 5 months
Contributions summary:Stefan made several changes focused on enhancing the documentation for the Intersection Observer API. Their commits primarily addressed clarifying existing documentation, correcting link errors, and updating text to reflect recent API specifications. The user also contributed to defining the attributes of the IntersectionObserverEntry and their related types within the specifications.
observerjavascriptreactintersection-observer
chromium/chromium
Jan 2020 - Jan 2023
The official GitHub mirror of the Chromium source
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:33 commits in 3 years 1 month
Contributions summary:Stefan primarily focuses on the core Chromium project, contributing to the web rendering engine and related components. They are involved in addressing race conditions in window management, refactoring code for performance optimization, and enhancing functionality for new windows within the browser. The user also works on implementing new features related to window management and integrating them across different Chromium modules. They contribute to various parts of the Chromium project, including the content, renderer, and browser layers.
chromiumgithub-mirrorchrome
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