Mozilla Careers — Contract Staff Front End Engineer (Web Conference/Screen Sharing) — Open Positions

Contract Staff Front End Engineer (Web Conference/Screen Sharing)

at Mozilla Corporation Team: Firefox Locations: Remote Canada

• Remote Canada

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

• Remote Canada

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Why Mozilla?

At Mozilla, we’re serving humanity—by maintaining a safe, open internet—while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.

Our values drive our actions

• Purpose is built into our work, with our mission driving every decision
• We challenge assumptions, the status quo, ourselves, and each other
• We are transparent: in our code, our business partnerships, and our everyday interactions
• We seek out people from diverse backgrounds and with perspectives different from our own
• We pair purpose with performance and put people ahead of profit

Our impact is global

• 1000+ paid staff from over 30 countries
• Thousands of volunteer contributors across six continents
• 2 global offices: Berlin and Toronto
• 9 coworking space locations: San Francisco, San Mateo, London, Paris, Portland, Tulsa, Vancouver, Chicago, and Bellevue
• Hundreds of home offices globally

Our benefits are world-class

• Flexible work environment (majority of Mozillians work remotely)
• Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
• Reimbursement for professional development (up to $3,000/year)
• A work setup including the latest hardware and software of your choice