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Jobs / Frontend Engineer in Canada
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Mozilla·7 hours ago
7 hours agoBe an early applicant

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

Remote CanadaContractRemoteMid · 4+ yearsFrontend Engineer

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Must-have skills for this role

  • javascript
  • html
  • css
  • automated testing

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Apply faster with autofill FREEmozilla uses Greenhouse - autofill it instead of retyping.careers.example.com/applyAutofillingFull namePriya SharmaEmailpriya.sharma@example.comPhone+49 30 1234567LocationBerlGet the extension

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 they're looking for

  • 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

Nice to have

  • 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

Summarised by NextRaise from the employer’s description, which follows in full below.

Full description from employer

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

Company

Mozilla
Remote Canada

Company facts come from this company's own listings. We only show what the postings themselves carry.

Sourced from Mozilla's careers site·first seen 22 Sept 2026·last verified 22 Sept 2026·How we source jobs

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