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Firefox OS Integration: Windows Senior Software Engineer

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Mozilla

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Location:
United States; Canada

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

116000.00 - 186000.00 USD / Year
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Job Description:

The OS Integration team ensures Firefox and other Gecko-based products harmonize well with the host operating system and environment. We work on components of Firefox including, but not limited to, native crash reporting, OS abstraction layers, platform-specific features, sandboxing and hardening. We’re a distributed team with expertise in Windows, macOS, and Linux-based operating systems. In this role, you will be a member of the OS Integration team specializing in the Windows platform.

Job Responsibility:

  • Improve the quality of Firefox on Windows by developing fixes and improvements, improving the user experience for hundreds of millions of users
  • Help develop and ship major new Firefox features on Windows
  • Work on cross-platform features and projects for other platforms such as macOS, Linux, and Android as needed
  • Collaborate with other teams by providing code review and technical direction
  • Work with a geographically-distributed development team

Requirements:

  • A degree in Computer Science or a related field or comparable work experience
  • A solid understanding of C and C++
  • Demonstrated experience with low-level systems programming on Windows
  • Knowledge of web technologies such as Javascript, HTML, and CSS
  • Strong problem-solving and debugging skills
  • Written and verbal communication skills with a collaborative mindset
  • Willingness to work effectively in a distributed team environment
  • Commitment to our values: Welcoming differences, Being relationship-minded, Practicing responsible participation, Having grit
What we offer:
  • 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)
  • Flexible work environment (majority of Mozillians work remotely)
  • Industry-leading paid parental leave (up to 26 weeks of fully paid leave for childbearing parents and up to 12 weeks for non-childbearing parents)
  • Reimbursement for professional development (up to $3,000/year)
  • A work setup including the latest hardware and software of your choice

Additional Information:

Job Posted:
January 02, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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