Senior Software Engineer, Firefox Desktop

Mozilla · IT

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Full Time€53.000 - €71.000 EURPosted Aug 26, 2026

Source: Mozilla

AT A GLANCE
Eligibility
Not available
Category
IT
Salary
€53.000 - €71.000 EUR
Employment
Full Time
Experience
Senior
Posted
Aug 26, 2026

This role’s source listing does not include Hungary as an eligible location.

Mozilla is hiring a Senior Software Engineer for the Firefox Desktop team to focus on OS integration and installation improvements, restricted to candidates based in France.

As a member of the Desktop Integrations team, you will tackle low-level platform challenges on Windows and macOS while contributing to architectural decisions. This role is fully remote within France and requires experience in systems-level programming to help improve the browser's install and update experience for millions of users.

Why You’ll Love This Role

Location: Remote France
Salary range: €53,000 - €71,000 EUR
Seniority: Senior level
Focus: Firefox desktop OS integrations
Benefit: Home office stipend and development budget

What You’ll Bring

3-5 Years experience as Software Engineer
Experience with systems-level programming on Windows or macOS
Solid programming skills in C/C++
Effective communication and collaboration skills for distributed teams
Ability to break down technical work and manage project timelines

What You’ll Get

Generous performance-based bonus plans
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting
Quarterly all-company wellness days
One-time home office stipend
Annual professional development budget
Quarterly well-being stipend
Paid parental leave

About the Company

Mozilla Corporation is a non-profit-backed technology company focused on building open-source software that keeps the internet accessible and privacy-focused. They are the creators of the Firefox browser and operate with a mission to prioritize people over shareholders.

Listing checked for remote eligibility · Posted Aug 26, 2026 · MozillaApply
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