IT & Software

Senior C++ OS Integration Engineer

Mozilla

Remote · Nationwide · Canada

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Build Firefox fixes and features remotely in Canada using C and C++ across Windows, macOS, and Linux operating systems.

As a Senior Software Engineer on Mozilla’s OS Integration team, you will improve Firefox and other Mozilla products. You will develop cross-platform changes, maintain the installer and updater, and address operating-system-specific defects. The work includes code reviews, debugging, secure coding, and collaboration with distributed engineering teams.

Key Responsibilities:

  • Debug and fix software defects affecting Firefox quality
  • Develop cross-platform features and operating system improvements
  • Maintain and develop Firefox installer and updater components
  • Perform code reviews and provide technical direction
  • Collaborate across geographically distributed development teams

Requirements:

  • Five or more years of software engineering experience
  • Strong knowledge of C and C++
  • Desktop application development experience on Windows, macOS, or Linux
  • Knowledge of secure coding and memory safety concerns
  • Strong problem-solving, debugging, and communication skills

Apply C++, debugging, and cross-platform engineering expertise to Firefox OS integration at Mozilla, remotely from Canada.

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Reference: WJ-4483_1568958 · Posted 11 Nov 2026, 04:51 AM

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