Senior Software Engineer, Firefox Desktop

Mozilla · IT

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Full Time£66,000 - £87,000 GBPPosted Aug 26, 2026

Source: Mozilla

AT A GLANCE
Eligibility
Not available
Category
IT
Salary
£66,000 - £87,000 GBP
Employment
Full Time
Experience
Senior
Posted
Aug 26, 2026

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

Mozilla is seeking a Senior Software Engineer to join their Firefox Desktop team, working remotely from within the United Kingdom.

As a Senior Software Engineer on the Desktop Integrations team, you will focus on OS-level integration for Windows and macOS to enhance the installation and update experience for Firefox users. This role involves architectural contributions, cross-functional collaboration, and leading complex technical projects in a distributed team environment.

Why You’ll Love This Role

Remote UK
GBP 66,000 - 87,000
Senior level
Firefox desktop development
Comprehensive benefits package

What You’ll Bring

3-5 Years experience as Software Engineer
Experience with systems-level programming on at least one major platform
Solid programming skills in C/C++
Effective communicator and collaborator
Ability to break down technical work and make steady progress within project timelines

What You’ll Get

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

About the Company

Mozilla is a mission-driven, non-profit-backed technology company dedicated to keeping the internet open and accessible. They are best known for developing the privacy-focused Firefox web browser and advocating for user rights online.

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