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Mozilla

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Mozilla

Senior Software Engineer, OS Integration

Mozilla Corporation seeks a remote Senior Software Engineer, OS Integration to join its distributed team. Supported by the non-profit Mozilla Foundation, the organization creates products like…

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Role Snapshot

Hiring Now
Work arrangement
Remote
Where applicants may be
Applicants in Canada only
Salary
Not specified
Apply by
Not specified
Employment type
Full-time
Experience
Not specified
Added to Jobsiz2h agoEmployer posted Nov 9, 2026
Listing Views2
Applications0
Apply BeforeNo deadline

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About This Role

Mozilla Corporation seeks a remote Senior Software Engineer, OS Integration to join its distributed team. Supported by the non-profit Mozilla Foundation, the organization creates products like Firefox and works on areas such as artificial intelligence, security, and social media to keep the internet open and accessible. Over 225 million individuals use its products monthly. In this position, the engineer will develop fixes, updates, and features for Firefox, focusing on how…

Job Description

Mozilla Corporation seeks a remote Senior Software Engineer, OS Integration to join its distributed team. Supported by the non-profit Mozilla Foundation, the organization creates products like Firefox and works on areas such as artificial intelligence, security, and social media to keep the internet open and accessible. Over 225 million individuals use its products monthly.

In this position, the engineer will develop fixes, updates, and features for Firefox, focusing on how the browser interacts with host operating systems including Windows, macOS, and Linux. Duties involve working on cross-platform components, native crash reporting, sandboxing, updates, enterprise DLP support, and installers. The role suits engineers with a background in desktop application development who want to impact products utilized by millions globally.

Responsibilities

  • Debug and resolve software defects to elevate the quality of Firefox and other Mozilla software
  • Design and implement new features and functional improvements
  • Break down assignments and partner with team members to deliver solutions
  • Collaborate alongside experienced software engineering colleagues
  • Conduct code reviews and offer technical guidance
  • Participate within a geographically distributed development team and communicate across organizational groups

Requirements

  • At least five years of overall software engineering experience
  • Strong proficiency in C and C++
  • Experience with desktop application development on Windows, macOS, or Linux using C++
  • Familiarity with web technologies including JavaScript and HTML
  • Knowledge of secure coding practices and memory safety considerations
  • Strong debugging and problem-solving abilities
  • Written and verbal communication skills paired with a collaborative mindset
  • Ability to work effectively in a distributed team setting

Qualifications

  • Experience with installer or updater development on any operating system
  • Familiarity with Windows internals such as the BITS server or MSIX packages
  • Prior open-source contributions or personal engineering projects

Core Skills

Benefits

  • Performance-based bonus plans for eligible employees
  • Comprehensive medical, dental, and vision insurance coverage
  • Retirement contributions with 100 percent immediate vesting
  • Quarterly company-wide wellness days
  • Country-specific holidays and a day off for birthdays
  • One-time home office stipend
  • Annual professional development budget
  • Paid parental leave
  • Employee referral bonus program

Frequently Asked Questions

Answers are based only on the employer’s listing; where it doesn’t say, neither do we.

Is this position remote?

Yes, this is a remote role operating within a geographically distributed team.

What experience level is required for this role?

Candidates must have at least five years of overall software engineering experience along with strong knowledge of C and C++.

What is the employment type?

The posting specifies full-time employment.

What salary does this job offer?

The general salary is not stated, though specific hiring ranges are provided for Canada Tier 1 ($104,000—$139,000 CAD) and Canada Tier 2 ($95,000—$126,000 CAD) locations.

Sample Interview Questions

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Posted by Mozilla

Source: Mozilla

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Posted by employer: Nov 9, 2026

Added to Jobsiz: Nov 9, 2026

The description was written by Jobsiz from the employer’s listing. Always check the original listing before applying.

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