mozilla/gecko-dev
Jun 2025 – Jun 2025
1 Month active
Languages Used
C++CSSJavaJavaScriptKotlinPython
Technical Skills
Addon DevelopmentAndroid DevelopmentAndroid TestingAutomated TestingAutomationBrowser Automation
Thomas Wisniewski
PROFILE
Thomas Wisniewski
Worked on the mozilla/gecko-dev repository to expand and refine web compatibility interventions across both desktop and Android platforms. Delivered nine new features and resolved twenty-five bugs by implementing CSS and JavaScript interventions, user-agent overrides, and automated testing frameworks. Focused on improving site compatibility and user experience by introducing header modification support in the webcompat addon, developing a cross-platform intervention test runner, and enhancing mobile-specific interventions. Utilized JavaScript, Python, and CSS to address layout, authentication, and interaction issues on targeted sites. Automated regression testing and platform-specific gating ensured reliable releases and maintained high standards for browser compatibility and quality.
Overall Statistics
Feature vs Bugs
26%Features
Repository Contributions
81Total
Bugs
25
Commits
81
Features
9
Lines of code
5,453
Activity Months1
Your Network
901 peopleSame Organization
@mozilla.com401
Shared Repositories
500
Work History
June 2025
81 Commits • 9 Features
Jun 1, 2025June 2025 mozilla/gecko-dev monthly summary: Delivered a broad expansion of WebCompat interventions across CSS, JS, and UA overrides, along with cross‑platform testing and automation to improve compatibility coverage and reliability. The work reduced user friction on numerous sites, expanded coverage for mobile/desktop, and strengthened release quality through automated tests and regression coverage.
81 Commits • 9 Features
Jun 1, 2025June 2025 mozilla/gecko-dev monthly summary: Delivered a broad expansion of WebCompat interventions across CSS, JS, and UA overrides, along with cross‑platform testing and automation to improve compatibility coverage and reliability. The work reduced user friction on numerous sites, expanded coverage for mobile/desktop, and strengthened release quality through automated tests and regression coverage.
June 2025
Activity
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Quality Metrics
Correctness96.6%
Maintainability96.0%
Architecture87.4%
Performance92.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CSSJavaJavaScriptKotlinPython
Technical Skills
Addon DevelopmentAndroid DevelopmentAndroid TestingAutomated TestingAutomationBrowser AutomationBrowser CompatibilityBrowser DevelopmentBrowser Extension DevelopmentBrowser ExtensionsBrowser InterventionsBrowser TestingBug FixingCSSCSS Styling
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline