[Remote] Senior Frontend Engineer

Note: The job is a remote job and is open to candidates in USA. Mozilla Corporation is a non-profit-backed technology company that has shaped the internet for the better over the last 25 years. They are seeking a Senior Frontend Engineer to build high-quality user interfaces for Firefox, collaborate with cross-functional teams, and improve engineering practices while focusing on performance, usability, and accessibility.ResponsibilitiesBuild high quality user interfaces for Firefox with accessibility and usability in mindWrite code and tests, build prototypes, tackle problems with no clear solution, collaborate with other designers and engineers to make the web a better placeLearn about a wide variety of problems and solutions across a large, mature codebaseWork with cross functional teams, building relationships and fostering collaboration to reach shared goalsHelp to level-up the skills of your fellow engineers through code reviews, giving talks, and/or writing documentationPromote and maintain high standards of code-quality, focusing on performance, testing, security, usability, accessibility and maintainabilityWork with driven, committed team members to bring the open web to people around the worldContribute to improving engineering practices and proceduresSkills4+ years experience as a software engineerYou have a background in shipping high quality software3+ years working experience with JavaScript, HTML, and CSSInterest in and ability to work with a distributed team (requires good asynchronous written communication skills as well as good verbal communication skills)Happy to provide and receive constructive feedbackWill contribute by asking questions and proposing new ideasA love of working with others collaborativelyCommitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having gritBenefitsGenerous performance-based bonus plans to all eligible employees - we share in our success as one teamRich medical, dental, and vision coverageGenerous retirement contributions with 100% immediate vesting (regardless of whether you contribute)Quarterly all-company wellness days where everyone takes a pause togetherCountry specific holidays plus a day off for your birthdayOne-time home office stipendAnnual professional development budgetQuarterly well-being stipendConsiderable paid parental leaveEmployee referral bonus programOther benefits (life/AD&D, disability, EAP, etc. - varies by country)Company OverviewMozilla provides internet solutions and offers firefox, thunderbird, and raindrop. It was founded in 1998, and is headquartered in Mountain View, California, USA, with a workforce of 501-1000 employees. Its website is https://www.mozilla.org.Company H1B SponsorshipMozilla has a track record of offering H1B sponsorships, with 2 in 2025, 5 in 2024, 4 in 2023, 3 in 2022, 2 in 2021, 6 in 2020. Please note that this does not guarantee sponsorship for this specific role.