Software Engineer, Firefox Desktop Integrations

Mozilla

. Assist in the development and maintenance of Firefox features related to installs, updates, and OS integrations .

Posted 10/15/2026full-timeRemote • CanadaMid-LevelSenior💰 CA$74,000 - CA$110,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in C/C++ programming with experience in systems-level programming on major platforms like Windows and macOS. Capable of collaborating on projects, contributing to code quality, and engaging in open-source initiatives.

Highest-signal resume keywords

C/C++ ProgrammingSystems-Level ProgrammingWindows OS IntegrationMacOS OS IntegrationCollaboration in Open Source

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C/C++ ProgrammingSystems-Level ProgrammingWindows OS IntegrationMacOS OS IntegrationBug Identification and FixingCode Review ParticipationProblem-Solving SkillsExposure to RustFamiliarity with LinuxFamiliarity with Native Windows or macOS APIs

Soft Skills

Clear CommunicationGrowth MindsetEnthusiasm for Software ContributionCollaborationSeeking Feedback

Industry Keywords

Firefox FeaturesInstallation ProcessUpdate ProcessPlatform-Specific ChallengesOpen Source Projects

Tech Stack

Tools & technologies

LinuxMacOSOpen SourceRustC++

About the role

Key responsibilities & impact

Assist in the development and maintenance of Firefox features related to installs, updates, and OS integrations
Work on improvements to the Firefox installation and update process with guidance from senior engineers
Support efforts to solve platform-specific challenges on Windows and/or macOS, particularly where Firefox must interact directly with the operating system
Collaborate with your manager and teammates to define and scope tasks, with regular check-ins to share progress and ask for support when needed
Participate in code reviews to grow your understanding and contribute to a high-quality codebase
Help identify and fix bugs that improve the Firefox experience for our global user base
Engage with a distributed team and contribute positively to an open and inclusive work environment

Requirements

What you’ll need

Some experience with systems-level programming on a major platform (e.g., Windows, macOS)
Proficiency with C/C++ programming
Willingness to communicate clearly, ask questions, and seek feedback
Ability to contribute to collaborative projects and steadily build up your technical and problem-solving skills
A growth mindset and enthusiasm for contributing to impactful software
Bonus: Exposure to or experience with Rust
Bonus: Familiarity with Linux, or macOS internals
Bonus: Exposure to or familiarity with native Windows or macOS APIs (such as Win32 or Cocoa)
Bonus: Previous participation in open source projects or a strong interest in learning how to contribute

Benefits

Comp & perks

Generous performance-based bonus plans to all regular 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)