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
Benefits Health and wellness: Mozilla covers medical, dental and vision plan premiums at 100% for U.S. and Canadian employees. Our offerings give you the options you need to manage your health — and your family’s — the way you want.
Mental health: Mental health is as important as our physical health. That’s why Mozilla’s health benefits include therapy and coaching sessions to make sure our people have access to the care they need.
Time away: With all of life’s demands, time away from work to disconnect and recharge is essential. In addition to country-specific holidays (12 in the U.S. and Canada), vacation and sick time start accruing right away (specifics vary by country). Everyone also takes a pause together on quarterly all-company wellness days, plus you get to celebrate the most personal holiday of all: your birthday.
Parental leave: While Mozilla’s parental leave policies vary globally, our U.S. and Canadian-based employees can look forward to 26 weeks of paid leave for childbearing parents and 12 weeks of paid leave for non-childbearing parents.
Financial: Mozilla is a private company, so our compensation isn’t tied to stock options or equity plans. Instead, we offer generous, performance-based bonus plans to all regular employees to underscore that we share in our success as one team. As for retirement savings for US and Canadian employees,



Mozilla contributes a percentage of your eligible base salary each year to the 401(k) Plan/RRSP (regardless of whether you contribute or not), with 100% vesting.
Learning and development: We’re big believers in learning by doing, and we also want to invest in your education and development beyond your role. Every employee is eligible for an annual professional development budget. Mozillians can put it toward technical or management training, certifications, conferences and more.
Help when you need it: Life is full of surprises; that’s why it’s important to be prepared. Mozilla provides Life/AD&D; and Short and Long Term Disability insurance (offerings may vary by locale) to ensure that you and your family will have a safety net in place should you ever need it.
Plus a bit more: A few other advantages include a quarterly wellbeing stipend (to use on those things just for you), an employee referral bonus, internet reimbursement if you’re remote, and a budget for office essentials to make working remotely ergonomically comfortable.
Comfort working in public, since Bugzilla and Phabricator are openExperience writing automated tests for user interfacesExperience implementing an approved design faithfully, plus the judgment to flag it when the design meets a case it didn’t anticipateStrong asynchronous written communication, since the team is distributed across timezones4+ years building production user interfaces with JavaScript, HTML, and CSSAbility to get productive quickly in a large, mature codebase you didn’t writePrior contributions to Firefox or another open-source browserFamiliarity with Firefox front-end architecture: browser/, custom elements, XUL, Fluent localizationExperience with WebRTC or getDisplayMediaAccessibility experience with modal dialogs and list navigationExperience with Mozilla’s test frameworks (browser-chrome, mochitest)Open source environment experienceExperience using AI tooling effectively in front-end development

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📌 Contract Staff Front End Engineer (Web Conference/Screen Sharing) (Quebec City)
🏢 Mozilla
📍 Quebec City