Mozilla Corporation is the non-profit-backed technology company behind Firefox, the privacy-minded web browser.
More than 225 million people around the world use our products each month.
We focus on AI, social media, security and more, with a core mission to make the internet better for people.
Responsibilities
Design, implement, test, and ship cutting-edge security features that strengthen Firefox’s security posture.
Contribute to and drive cutting-edge improvements to Firefox’s core security posture, by building privilege isolation and moving trust boundaries.
Improve Firefox’s core security mechanisms including cryptographic protocols, WebPKI, and security-sensitive web APIs.
Work across teams to investigate security issues, identify root causes, and deliver robust, maintainable fixes.
Diagnose and resolve issues affecting stability, correctness, performance, and memory usage in a complex, multithreaded environment.
Requirements
3+ years of experience in low-level software engineering, strong proficiency in C and/or C++, and a solid understanding of security fundamentals.
Experience diagnosing and resolving issues in multithreaded, cross-platform native applications, including memory and performance challenges.
Familiarity with web technologies (HTML, CSS, JavaScript) and interest or experience in Rust; ability to work effectively within large, complex, multi-language codebases.
Experience working with distributed teams and communicating technical ideas clearly in writing and conversation.
Conditions
Generous performance-based bonus plans.
Generous retirement contributions with 100% immediate vesting.
Quarterly all-company wellness days.
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).