Mozilla

4 weeks ago

Senior Software Engineer, Firefox Security

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 5 hours agoStatus: Live

Job Summary

Join Mozilla as a Senior Software Engineer focused on Firefox security. You’ll advance cryptographic protocols and WebPKI, design and implement security features for the web platform, improve browser reliability and performance in a multi-threaded environment, collaborate across teams on security initiatives, and participate in design reviews and planning for security-focused projects.

Location: Finland

Workplace: Remote

Employment Type: Full time

Job Function: Software Engineering

Key Responsibilities

•Advance Firefox’s security architecture and cryptography stack by improving core security systems, cryptographic protocols, WebPKI, and web APIs.
•Design and implement web platform security features, shipping standards-based, secure, interoperable implementations across Firefox.
•Improve browser reliability, performance, and resource efficiency by investigating issues and optimizing memory usage in a complex multi-threaded environment.
•Collaborate with engineers across teams to identify, prioritize, and address security issues, including debugging and root-cause analysis.
•Contribute to technical design and planning through design reviews and engineering trade-off evaluations for security initiatives.

Pay and Benefits

Salary: EUR 45,000 - 60,000 annually

Perks:Annual BonusHealth InsuranceDentalVisionPaid ParentalHome OfficeWellness StipendBirthday Leave

Key Requirements

•Strong software engineering and security fundamentals with proficiency in C/C++ and cryptographic principles.
•Experience building 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 memory-related challenges.
•Collaborative and effective communicator with distributed teams and ability to explain technical concepts clearly.
•Growth mindset with willingness to deepen expertise in browser security, cryptography, and systems programming; comfortable with web technologies and Rust.

Experience:Browser securityWeb platformCryptography

Skills:CommunicationCollaborationProblem-solving

Languages:English

Tech Stack:CC++RustWebCryptoWebPKICryptographyMemory managementMultithreading

Company Brief

Mozilla

Mozilla is a mission-driven organization that builds open-source internet products (notably the Firefox browser) and advocates for an open, private, and secure web through software, research, and community programs.

Industry: Enterprise Software

Company Size: Large (251 to 1,000 employees)

Growth: Nonprofit & NGO

Headquarters: San Francisco, United States

Founded: 1998

Glassdoor: 2.9

Website LinkedIn Glassdoor

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Mozilla

4 weeks ago

Senior Software Engineer, Firefox Security

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 5 hours agoStatus: Live

Job Summary

Location: Finland

Workplace: Remote

Employment Type: Full time

Job Function: Software Engineering

Key Responsibilities

•Advance Firefox’s security architecture and cryptography stack by improving core security systems, cryptographic protocols, WebPKI, and web APIs.
•Design and implement web platform security features, shipping standards-based, secure, interoperable implementations across Firefox.
•Improve browser reliability, performance, and resource efficiency by investigating issues and optimizing memory usage in a complex multi-threaded environment.
•Collaborate with engineers across teams to identify, prioritize, and address security issues, including debugging and root-cause analysis.
•Contribute to technical design and planning through design reviews and engineering trade-off evaluations for security initiatives.

Pay and Benefits

Salary: EUR 45,000 - 60,000 annually

Perks:Annual BonusHealth InsuranceDentalVisionPaid ParentalHome OfficeWellness StipendBirthday Leave

Key Requirements

•Strong software engineering and security fundamentals with proficiency in C/C++ and cryptographic principles.
•Experience building 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 memory-related challenges.
•Collaborative and effective communicator with distributed teams and ability to explain technical concepts clearly.
•Growth mindset with willingness to deepen expertise in browser security, cryptography, and systems programming; comfortable with web technologies and Rust.

Experience:Browser securityWeb platformCryptography

Skills:CommunicationCollaborationProblem-solving

Languages:English

Tech Stack:CC++RustWebCryptoWebPKICryptographyMemory managementMultithreading

Company Brief

Mozilla

Industry: Enterprise Software

Company Size: Large (251 to 1,000 employees)

Growth: Nonprofit & NGO

Headquarters: San Francisco, United States

Founded: 1998

Glassdoor: 2.9

Website LinkedIn Glassdoor