# Senior Software Engineer, OS Integration at Mozilla

- Company: Mozilla
- Status: Open
- Workplace: Remote
- Location: Remote Canada
- Level: Senior
- Discipline: Backend
- Employment: Full-time
- Salary: CA$95K–139K
- Posted: 2026-11-09
- Skills: Firefox
- Apply: https://job-boards.greenhouse.io/mozilla/jobs/8328239

## Description

Why Mozilla? 
 Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. 
 The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. 
 About the OS Integration team: 
 The OS Integration team ensures Firefox works well with the host operating system and environment. We’re a distributed team with expertise in Windows, macOS, and Linux-based operating systems. Our responsibilities include developing fixes and improvements for Firefox related to Windows, macOS, and Linux environments. This might include integration with a new OS feature or fixing an OS-specific user interface bug. Other responsibilities include native crash reporting, OS abstraction layers, sandboxing, hardening, updater, and enterprise DLP support. 
 About the role: 
 As a member o

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