Sam Sneddon
Software Engineer at Apple
San Francisco, California, United States
Summary
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Rockstar🎓
Top School
Top expert inWeb and Mobile Security Technologies
Sam Sneddon is a seasoned software engineer with 20 years of experience specializing in web standards, cross-vendor interoperability, and large-scale test automation for browsers. Based in San Francisco, he has driven integration of the 1.8M+ web-platform-tests suite into major engines including WebKit and coordinated cross-company efforts at Apple and Google to improve CI coverage and catch regressions earlier. Comfortable working end-to-end, Sam mixes technical leadership of corporate-backed open source projects with hands-on contributions — from C-level fixes in Cython to DOM and CSS test work in prominent repos like web-platform-tests, WHATWG, and W3C drafts. He’s adept at modernizing tooling and dependencies, automating test imports, and resolving flaky CI at scale, and has a track record of persuading standards bodies and vendors to adopt practical testing policies. Notably, his background in both English Language and Computing Science supports unusually clear technical writing and specification editing alongside deep engineering.
20 years of coding experience
13 years of employment as a software developer
Master of Arts (MA) with Honours English Language and Computing Science, Master of Arts (MA) with Honours English Language and Computing Science at University of Glasgow
English
Stackoverflow
5,652reputation
1.5mreached
74answers
9questions
garbage-collection
top-5%
html-table
top-5%
dom
top-5%
webgl
top-5%
javascript
top-5%
Github Skills (44)
unit-testing10
javascript10
test-automation-framework10
webdriver10
python10
testing10
technical-writing10
css10
standard-js10
standardized10
c1110
webkit10
c1710
php10
dom10
Programming languages (23)
Github contributions (5)
web-platform-tests/wpt
Aug 2009 - Dec 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:241 reviews, 893 commits, 1825 PRs in 13 years 5 months
Contributions summary:Sam has contributed to the web-platform-tests/wpt repository by modifying existing tests and adding new ones. Their commits involve fixing existing tests, modifying their behavior, and contributing new tests. The user's contributions primarily involve the testing of web platform specifications, likely with a focus on ensuring conformance to standards.
microsoft-edgetest-runnerspecssafarifirefox
simplepie/simplepie
Mar 2006 - Jan 2020
A simple Atom/RSS parsing library for PHP.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:714 commits, 1 PR, 4 comments in 14 years
Contributions summary:Sam's commits primarily focused on updating and modifying the demo and minimalistic PHP files within the SimplePie project. These changes involved updating code related to object-oriented programming, adding support for feed image display, and fixing bugs related to entity decoding and HTML parsing. The user also contributed to the project's codebase by adding in various test cases and making improvements to existing documentation, including new test-case functions.
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