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[Remote] Senior Frontend Engineer

Remote, USA Full-time Posted 2026-06-25

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.

Responsibilities

  • Build high quality user interfaces for Firefox with accessibility and usability in mind
  • Write code and tests, build prototypes, tackle problems with no clear solution, collaborate with other designers and engineers to make the web a better place
  • Learn about a wide variety of problems and solutions across a large, mature codebase
  • Work with cross functional teams, building relationships and fostering collaboration to reach shared goals
  • Help to level-up the skills of your fellow engineers through code reviews, giving talks, and/or writing documentation
  • Promote and maintain high standards of code-quality, focusing on performance, testing, security, usability, accessibility and maintainability
  • Work with driven, committed team members to bring the open web to people around the world
  • Contribute to improving engineering practices and procedures

Skills

  • 4+ years experience as a software engineer
  • You have a background in shipping high quality software
  • 3+ years working experience with JavaScript, HTML, and CSS
  • Interest 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 feedback
  • Will contribute by asking questions and proposing new ideas
  • A love of working with others collaboratively
  • Commitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having grit

Benefits

  • Generous performance-based bonus plans to all eligible employees - we share in our success as one team
  • Rich medical, dental, and vision coverage
  • Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
  • Quarterly all-company wellness days where everyone takes a pause together
  • Country specific holidays plus a day off for your birthday
  • One-time home office stipend
  • Annual professional development budget
  • Quarterly well-being stipend
  • Considerable paid parental leave
  • Employee referral bonus program
  • Other benefits (life/AD&D, disability, EAP, etc. - varies by country)

Company Overview

  • Mozilla 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 Sponsorship

  • Mozilla 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.
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