Senior Software Engineer, Firefox Security

Stack

Responsibilities

• ▹Advance Firefox's security architecture and cryptography stack (cryptographic protocols, WebPKI, security-sensitive web APIs)
• ▹Implement and maintain security features supporting the evolution of public key infrastructure
• ▹Design and implement web platform security features, shipping standards-based implementations
• ▹Improve browser reliability, performance and resource efficiency
• ▹Investigate and resolve stability, correctness and performance issues
• ▹Analyze and improve memory usage in a complex, multi-threaded environment
• ▹Collaborate on security initiatives with engineers across teams
• ▹Participate in debugging, root cause analysis and long-term solution implementation
• ▹Contribute to technical design, design reviews and project planning

Requirements

• ▹Strong software engineering and security fundamentals, proficiency in C/C++
• ▹Understanding of cryptographic protocols and implementations
• ▹Experience building and maintaining complex software systems in large-scale, security-sensitive environments
• ▹Strong debugging and problem-solving skills in multi-threaded, cross-platform native applications
• ▹Effective collaboration and clear technical communication with distributed teams
• ▹Growth mindset and curiosity about browser security and cryptography
• ▹Familiarity with web technologies
• ▹Comfortable working within large, complex, multi-language codebases

Nice to have

• ▹Experience with or interest in Rust

Soft skills

About the company

Mozilla Corporation is the non-profit-backed technology company behind Firefox, with over 225 million monthly users; owned by the non-profit Mozilla Foundation, it isn't beholden to shareholders, only its mission. With a global community of volunteer contributors, it builds open-source software that keeps the internet open for people.