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
Tomek Wisniewski enhanced the mozilla/gecko-dev repository by expanding web compatibility interventions across CSS, JavaScript, and user-agent overrides, targeting both mobile and desktop platforms. He developed new features for the WebCompat addon, including header modification support and a cross-platform intervention test runner, while also implementing automated regression tests to ensure reliability. Using Python and JavaScript, Tomek addressed site-specific issues through targeted interventions and streamlined compatibility checks with automation. His work improved user experience by reducing friction on problematic sites and strengthened release quality through comprehensive testing, reflecting a deep understanding of browser development, cross-platform testing, and web compatibility challenges.
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
852 people
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