Staff Software Engineer, Mozilla VPN

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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, and Pocket, a service for keeping up with the best content online. 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 this team and role:

Mozilla VPN is seeking an experienced software engineer to join our fully remote, global engineering team. In this role, you will contribute to the suite of products that make up the Mozilla VPN project, including browser extensions, browser integrations, and the Mozilla VPN client—a cross-platform application available on Windows, macOS, Linux, iOS, and Android. You will be responsible for implementing new features as well as improving the performance and the reliability of existing functionality. Additionally, you will have the opportunity to be at the forefront of innovative, challenging, and technically complex initiatives.

What you’ll do: 

• Drive the architecture, development, and optimization of the Mozilla VPN client across platforms (Windows, macOS, Linux, iOS, Android).
• Work closely with cross functional colleagues, providing technical insight to drive feature development.
• Maintain high-quality code, enforce security best practices, and mentor engineers by providing comprehensive and insightful code reviews.
• Triage, debug and resolve software defects

What you’ll bring: 

• 6+ years of software engineering experience
• Expert level proficiency in C/C++
• Expertise in networking protocols and privacy and security best practices

Extensive knowledge of core OS concepts of Windows or Mac

• Experience developing cross-platform applications (Windows, macOS, Linux, iOS, Android)

Experience debugging network related problems with Wireshark, tcpdump, or similar tools

• Excellent communication skills and experience mentoring engineers

Bonus points:

• Experience developing cross platform applications with Qt
• Proficiency in any of the following: Rust, Go, Python, Javascript, TypeScript, Git
• Open-source contributions to networking or VPN-related projects
• Experience implementing or improving application observability

What you’ll get:

• 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)

About Mozilla 

Mozilla exists to build the Internet as a public resource accessible to all because we believe tha