Senior Software Engineer (Cryptography) (Firefox Security)

TL;DR

Senior Software Engineer (Cryptography) (Firefox Security): Advancing Firefox's security architecture and cryptography stack by improving cryptographic protocols, WebPKI, and security-sensitive web APIs with an accent on secure, standards-based implementations and evolving public key infrastructure. Focus on solving complex multi-threaded browser reliability, performance, and memory-efficiency issues while collaborating on security initiatives and technical design decisions.

Location: Remote (Canada)

Salary: $95,000–$139,000 CAD

Company

hirify.global builds open-source software and the Firefox browser to help make the internet a public resource.

What you will do

• Advance Firefox security architecture and cryptography stack, improving cryptographic protocols, WebPKI, and security-sensitive web APIs.
• Design and implement web platform security features in collaboration with teammates and the broader web community.
• Improve browser reliability, correctness, performance, and resource efficiency by investigating and resolving stability and memory issues.
• Collaborate on security initiatives through debugging, root-cause analysis, and long-term solution implementation.
• Contribute to technical design and planning via technical discussions, design reviews, and project planning.

Requirements

• Strong software engineering and security fundamentals, including proficiency in C/C++ and understanding of cryptographic protocols and implementations.
• Experience designing, implementing, testing, and maintaining complex software systems in large-scale or security-sensitive environments.
• Strong debugging and problem-solving skills for multi-threaded, cross-platform native applications, including performance and memory-related challenges.
• Ability to communicate technical concepts clearly and collaborate effectively with distributed teams.
• Interest or experience with Rust and comfort working in large, complex, multi-language codebases.

Culture & Benefits

• Performance-based bonus plans and shared success as one team.
• Rich medical, dental, and vision coverage.
• Generous retirement contributions with 100% immediate vesting.
• Quarterly wellness days, country-specific holidays, and a day off for your birthday.
• One-time home office stipend, annual professional development budget, and quarterly well-being stipend.
• Considerable paid parental leave and additional benefits that vary by country.

Hiring process

• Interviews and technical evaluation focused on security/cryptography and engineering problem-solving.
• Design review and collaboration discussions to assess fit for security-related engineering work.