Brandon Stewart - Software Engineer at Apple

Brandon Stewart

Software Engineer at Apple

Los Angeles, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Brandon Stewart is a software engineer with 12 years of experience specializing in web engines, front-end layout, and test automation, based in Los Angeles. At Apple he implemented a CSS Masonry layout, added native Compression Streams to the web, and built WebKit’s documentation site, demonstrating both deep browser-engine skills and a knack for developer-facing tools. He’s an active open-source contributor to high-profile projects like gecko-dev and web-platform-tests, writing precise tests and spec-driven fixes for CSS Grid, masonry, and compression behaviors. Earlier work spans protocol stack debugging for Intel modems and parallel CUDA research for drug-discovery, showing a comfort with low-level systems as well as high-level web standards. Colleagues rely on him to translate spec nuances into robust implementations and to improve test coverage where subtle rendering or compression edge cases hide. Notably, he combines formal protocol and performance experience with practical contributions to W3C/WPT and WebKit, bridging standards, implementation, and verification.

12 years of coding experience

4 years of employment as a software developer

High School Diploma, High School Diploma at Saint Viator High School

Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Purdue University

Github Skills (19)

javascript10

c-language10

testing10

css10

css-grid10

webkit10

dom10

web-standards10

html10

webtest10

cprogramming-language10

test-automation10

browser9

test-runner9

interprocess-communication8

Programming languages (9)

BikeshedCSSC++CTeXJavaScriptVueHTML

Github contributions (5)

web-platform-tests/wpt

Nov 2021 - Jan 2023

Test suites for Web platform specs — including WHATWG, W3C, and others

Role in this project:

Front-end Developer & Test Automation Engineer

Contributions:8 reviews, 8 commits, 41 PRs in 1 year 2 months

Contributions summary:Brandon primarily contributes to the web platform test suite, focusing on adding and modifying tests related to HTML, DOM, CSS Grid, and compression streams. They developed tests to verify event handler behaviors for HTML elements and implemented test cases for masonry layout features, including item placement and track sizing. They also wrote tests for compression stream handling and intrinsic sizing behavior.

microsoft-edgetest-runnerspecssafarifirefox

WebPlatformForEmbedded/WPEWebKit

Sep 2021 - Aug 2022

WPE WebKit port (downstream)

Role in this project:

Full-stack Developer

Contributions:48 commits in 10 months

Contributions summary:Brandon's commits primarily focus on enhancing and maintaining the WebKit engine, specifically targeting WebKit's WPE port. They addressed various issues including crashes related to IPC messaging, selection extend exceptions, and border radius behavior. The user also contributed to test suite improvements, adding test cases to verify functionalities like execCommand with ordered lists and CSS border radii. Furthermore, they made adjustments to ensure valid bidiLevels and correct layer handling.

wpedownstreamwebkit

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