About the team and role
Mozilla's Web Conferencing team owns the media capture and sharing features that make Firefox work for video calls: screen, window, and tab capture, and the interface users interact with when they share content in Google Meet, Zoom, or Jitsi.
We're bringing a set of screensharing improvements to Firefox. The backend work is complete and the UX has been designed and approved. We're looking for a front-end engineer on a fixed-term contract to implement it and ship it.
What you'll do
Implement approved UX designs for Firefox's screen, window, and tab sharing experience, and see them through to release
Build browser UI that holds up in a large, widely used codebase: tested, accessible, and localizable
Work with UX on the cases a design didn't anticipate, and with QA on validating the result
Support partner testing against major web conferencing services
Land your work in mozilla-central through public code review on Phabricator
What you'll bring
4+ years building production user interfaces with JavaScript, HTML, and CSS
Experience implementing an approved design faithfully, plus the judgment to flag it when the design meets a case it didn't anticipate
Ability to get productive quickly in a large, mature codebase you didn't write
Experience writing automated tests for user interfaces
Strong asynchronous written communication, since the team is distributed across timezones
Comfort working in public, since Bugzilla and Phabricator are open
Bonus qualifications
Prior contributions to Firefox or another open-source browser
Familiarity with Firefox front-end architecture: browser/, custom elements, XUL, Fluent localization
Experience with WebRTC or getDisplayMedia
Accessibility experience with modal dialogs and list navigation
Experience with Mozilla's test frameworks (browser-chrome, mochitest)
Experience using AI tooling effectively in front-end development
Open source environment experience
Hiring Ranges:
Canada Tier 1 Locations
$145,000—$170,800 CAD
Canada Tier 2 Locations
$154,000—$168,000 USD
Mozilla Corporation is a non-profit-backed technology company that has shaped the internet for the better over the last 25 years. The company makes pioneering brands like Firefox, a privacy-minded web browser used by more than 225 million people monthly. Mozilla focuses on diverse areas including AI, social media, and security while maintaining its core mission to make the internet better for people. The company is wholly owned by the non-profit 501(c) Mozilla Foundation, meaning it is not beholden to shareholders. Along with thousands of volunteer contributors worldwide, Mozilla designs, builds, and distributes open-source software that enables people to enjoy the internet on their terms.
