7 days ago
Remote, BelgiumSenior
Responsibilities
- Design, implement, test, and ship security and hardening features for Firefox.
- Advance Firefox’s security architecture across multiple operating systems through privilege isolation, trust-boundary changes, cryptographic protocols, WebPKI, and security-sensitive web APIs.
- Investigate security issues, identify root causes, and deliver robust, maintainable fixes across teams.
- Diagnose and resolve browser stability, correctness, performance, and memory issues 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 debugging multithreaded, cross-platform native applications, including memory and performance challenges.
- Familiarity with HTML, CSS, and JavaScript.
- Interest or experience in Rust and ability to work in large, complex, multi-language codebases.
- Ability to collaborate with distributed teams and communicate technical ideas clearly in writing and conversation.
Benefits
- Performance-based bonus plans for eligible employees.
- Retirement contributions with 100% immediate vesting.
- Quarterly company wellness days, country-specific holidays, and a birthday day off.
- One-time home office stipend and annual professional development budget.
- Quarterly well-being stipend, paid parental leave, employee referral bonus program, and other country-specific benefits.
- Remote role based in Belgium.
Tech Stack
Categories
About Mozilla
Mozilla builds open-source internet software, best known for the Firefox web browser, plus privacy tools like a VPN, password manager, and identity services. Its products are largely free and monetized through search partnerships and paid subscriptions, serving consumers, developers, and enterprises building for the web. Founded in 2005 and headquartered in San Francisco, Mozilla Corporation is wholly owned by the non-profit Mozilla Foundation.