Mozilla · 3 months ago
Senior Software Engineer - Firefox Enterprise
United States
Full-time
Remote
Senior LevelMozilla Corporation is a non-profit-backed technology company that has shaped the internet for the better over the last 25 years, known for pioneering brands like Firefox. The Senior Software Engineer for the Firefox Enterprise team will be responsible for enhancing Firefox's integration with operating systems, improving security and usability for large deployments, and collaborating with a geographically-distributed team to deliver high-quality software.
Browser ExtensionsInternetOpen SourceSoftwareWeb Browsers
Responsibilities
Develop, innovate, and ship the next experience of Firefox through improved integration with the operating system
Improve the ease of use and security of Firefox in large deployments by developing better administration and monitoring tools
Assess what work supports the team and product roadmap and make insightful recommendations in regards to priorities
Work with expert software engineers to further develop your understanding of the Windows, macOS and Linux platforms
Optimize the quality of Firefox by hunting down and fixing software defects, improving the experience of hundreds of millions of users
Work with a geographically-distributed development team
Qualification
Required
Experience with systems programming on a major desktop platform (Windows, macOS or Linux)
A solid understanding of C/C++ and some knowledge of Rust
A solid understanding of JavaScript and typical interactions with the backend (services, REST, ... )
You are an excellent communicator and have participated effectively on a distributed team
You're pragmatic about how to move things forward in specific timeframes including trade-offs and safeguards when implementing new functionality
Experience working collaboratively with product managers, project managers, and/or other non-engineering teams
Preferred
Professional programming experience in Rust
You have developed cross-platform desktop applications, particularly when this involves low level systems programming such as Cocoa APIs on macOS or GTK on Linux
You have previously successfully contributed to an open source project
Benefits
Generous performance-based bonus plans to all eligible 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)
Company
Mozilla
Mozilla provides internet solutions and offers firefox, thunderbird, and raindrop.
Founded in 1998
501-1000 employees
H1B Sponsorship
Mozilla has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2024 (5)
2023 (4)
2022 (3)
2021 (2)
2020 (6)
Funding
Current Stage
Late StageTotal Funding
$2.3MKey Investors
AOL
2005-01-01Angel· $0.3M
2003-07-15Series Unknown· $2M
Leadership Team
John Shaughnessy
Manager, Engineering and Ecosystem Strategy
Recent News
2026-01-16
2026-01-16
2025-12-31
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