Senior Software Engineer, OS Integration
Firefox · Remote Finland
About this role
**Why Mozilla?** Mozilla Corporation is a 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. 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—while never losing focus on our core mission: **to make the internet better for people**. Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation, meaning we aren’t beholden to shareholders—only to our mission. Along with thousands of volunteer contributors and collaborators worldwide, 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**. Responsibilities include developing fixes and improvements for Firefox related to Windows, macOS, and Linux environments—such as integrating with new OS features or fixing OS-specific UI bugs. Other responsibilities include **native crash reporting, OS abstraction layers, sandboxing, hardening, the updater, and enterprise DLP support**. **About the role** As a member of the OS Integration team, you’ll develop fixes, improvements, and new features for Firefox. Work may be cross-platform or include cross-platform components. This role includes maintenance and development of the **Firefox installer and updater**. You’ll contribute through **code review** and **discussion**. **What you’ll do** - Improve the quality of Firefox and other Mozilla products by debugging and fixing software defects, improving the browsing experience for hundreds of millions of users. - Contribute to new features and improvements. - Break down tasks and work with others to deliver solutions. - Collaborate with experienced software engineers.
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