Responsibilities
- Advance Firefox’s security architecture and cryptography stack, including cryptographic protocols, WebPKI, and security-sensitive web APIs.
- Design, implement, and ship secure, standards-based, interoperable web platform features.
- Investigate and resolve browser stability, correctness, performance, memory, and resource-efficiency issues.
- Collaborate with engineers across teams to identify, prioritize, and address security issues.
- Participate in debugging, root-cause analysis, technical discussions, design reviews, and project planning.
Requirements
- Experience in software engineering with proficiency in C/C++ and a solid understanding of security principles, cryptographic protocols, and implementations.
- Experience designing, implementing, testing, and maintaining complex software in large-scale or security-sensitive environments.
- Expertise debugging multithreaded, cross-platform native applications, including performance and memory-related issues.
- Familiarity with web technologies and interest or experience in Rust.
- Ability to communicate technical concepts clearly and collaborate effectively with distributed teams.
- Curiosity and willingness to deepen expertise in browser security, cryptography, and systems programming.
Benefits
- Remote role in the UK
- Performance-based bonus plans for eligible employees
- Medical, dental, and vision coverage
- Retirement contributions with 100% immediate vesting
- Quarterly company wellness days
- Country-specific holidays and a birthday day off
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Paid parental leave
- Employee referral bonus program
- Additional benefits such as life/AD&D insurance, disability coverage, and EAP, varying by country
About Mozilla
A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.