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:
Skills Required
- 4+ years building production user interfaces
- Professional experience with JavaScript, HTML, and CSS
- Experience implementing approved designs faithfully and identifying unanticipated design cases
- Ability to become productive quickly in a large, mature codebase
- Experience writing automated tests for user interfaces
- Strong asynchronous written communication skills
- Comfort working in public with Bugzilla and Phabricator
- Prior contributions to Firefox or another open-source browser
- Familiarity with Firefox front-end architecture, browser/, custom elements, XUL, and Fluent localization
- Experience with WebRTC or getDisplayMedia
- Accessibility experience with modal dialogs and list navigation
- Experience with Mozilla test frameworks, including browser-chrome and mochitest
- Experience using AI tooling effectively in front-end development
- Open-source environment experience
Mozilla Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Mozilla and has not been reviewed or approved by Mozilla.
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Healthcare Strength — Health coverage is fully employer‑paid in the U.S. and Canada, with generous coverage noted in most other countries. Mental‑health care access, including therapy and coaching, is emphasized.
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Parental & Family Support — Paid parental leave is described as substantial for both childbearing and non‑childbearing parents in the U.S. and Canada. Family‑friendly policies extend to dependent healthcare coverage.
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Strong & Reliable Incentives — Performance‑based bonus plans are offered to all regular employees, with individual targets and quarterly opportunities. This cash‑oriented model provides predictable, company‑wide incentive structures.
Mozilla Insights
What We Do
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, 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.
