Daniel Bellfield
Web Developer at Mal Warwick Donordigital
Los Angeles Metropolitan Area United States
Summary
🤩
Rockstar🎓
Top SchoolDaniel Bellfield is a Los Angeles–based web developer with 11 years of experience building HTML emails, CRM-driven web experiences, and client sites using PHP, WordPress, JavaScript, and modern email platforms like Salesforce Marketing Cloud and Mailchimp. He combines hands-on digital production—debugging across Litmus and Email on Acid and managing remote projects—with a strong open-source pedigree, contributing security- and standards-focused fixes and tests to high-profile projects such as Chromium and web-platform-tests. His work on the Sanitizer API and Content Security Policy test suites shows a specialty in web security, spec-aligned implementation, and rigorous cross-browser testing. Comfortable working with marketing teams and engineers alike, he brings both creative attention to design details and a disciplined approach to code quality and interoperability.
11 years of coding experience
1 year of employment as a software developer
Bachelor's degree, Digital Media Arts, Bachelor's degree, Digital Media Arts at California State University-Dominguez Hills
Github Skills (20)
javascript10
c-language10
content-security-policy10
apidoc10
sec10
testing10
chromium10
dom-manipulation10
trusted-types10
api10
dom10
web-standards10
html10
web-development10
webtest10
Programming languages (8)
Github contributions (5)
web-platform-tests/wpt
Aug 2017 - Dec 2022
Test suites for Web platform specs — including WHATWG, W3C, and others
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:12 reviews, 94 commits, 5 PRs in 5 years 4 months
Contributions summary:Daniel primarily contributed to improving the Web Platform Tests (WPT) suite, focusing on various web standards and security features. Their work includes implementing and testing features related to Content Security Policy (CSP), Origin Policy, and Trusted Types. They also worked on performance enhancements and security features, like ensuring correct handling of JavaScript navigation and code. Their commits often involved creating new test cases and modifying existing ones to cover new scenarios and edge cases.
microsoft-edgetest-runnerspecssafarifirefox
mozilla/gecko-dev
Apr 2018 - Dec 2022
Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:92 commits in 4 years 8 months
Contributions summary:Daniel's commits primarily involve updating and expanding web-platform-tests within the `mozilla/gecko-dev` repository, specifically focusing on the Sanitizer API. They've added test cases using the HTML5lib-based format, re-enabled existing tests, and updated tests to align with the latest specification drafts. These changes involve the implementation of core Sanitizer logic, including the handling of boolean defaults and template contents, demonstrating a focus on ensuring API correctness and feature coverage.
repositoriesfirefoxmercurialgit-mirrormozilla
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