Piers Wombwell
CEO at Ekioh
Cambridge, England, United Kingdom
Summary
🤩
Rockstar
Top expert inWeb and Mobile Security Technologies
Piers Wombwell is a Cambridge-based CEO and seasoned software engineer with 19 years' experience architecting embedded user-interface engines and browser technology, currently leading development of a multithreaded HTML and SVG browser at Ekioh. His background spans low-level work—CPU and VLIW processor simulation and porting the Java VM—to high-level web standards and browser internals, giving him rare depth across systems and UI stacks. An active contributor to major web standards and test suites (WHATWG, W3C, web-platform-tests), he focuses on DOM/HTML refinements, accessibility (WAI-ARIA), and reliable front-end behavior across browsers. Piers blends hands-on C++/Java/ECMAScript engineering with specification and test-driven thinking, ensuring implementations match the intent of standards. Notably, he has improved link-fixup performance and authored tests and editorial changes that shape real-world browser behavior.
19 years of coding experience
10 years of employment as a software developer
Github Skills (24)
accessibility10
uitest10
spec10
javascript10
css10
user-interface10
sched10
front-end-development10
dom10
web-standards10
specification10
webvtt10
html10
web-development10
gui-testing10
Programming languages (28)
Github contributions (5)
web-platform-tests/wpt
Jul 2012 - Jan 2023
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:
Front-end Developer & Test Automation Engineer
Front-end Developer & Test Automation EngineerContributions:162 reviews, 981 commits, 1071 PRs in 10 years 8 months
Contributions summary:Piers primarily contributed to the test suite for the Web Platform Tests repository, specifically focusing on web standards compliance and testing various browser features. Their work included creating and modifying tests for different HTML and JavaScript features, such as geometry, webVTT, payment request, and the handling of the `contentEditable` attribute. The user's contributions involved updating and expanding existing test cases to cover a wider range of scenarios and edge cases, ensuring that browser implementations align with the latest web standards. The user also contributed to the tests' codebase improvements.
microsoft-edgetest-runnerspecssafarifirefox
whatwg/html
Aug 2015 - Nov 2022
HTML Standard
Role in this project:Front-end Developer
Front-end DeveloperContributions:352 reviews, 240 commits, 439 PRs in 7 years 3 months
Contributions summary:Piers primarily focused on improving the HTML Standard's front-end functionality. They made significant changes to `link-fixup.js`, including optimizing it for performance, fixing issues related to fragment links, and supporting percent-escaped fragids. Furthermore, they addressed bugs in `html-dfn.js`, which included fixes related to cross-references, panel persistence, and general usability improvements. Their work also involved modifying 404.html and addressing navigation behavior.
html-standardeventsourcecanvascssjavascript
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