Staff Security Engineer, Product Security
WFA Digital Insight
As the demand for cybersecurity specialists continues to grow, with a 25% increase in 2025, roles like this Staff Security Engineer position at Mozilla are more crucial than ever. With millions of users relying on Mozilla's products, this role is a unique opportunity for a skilled security engineer to make a significant impact. Mozilla's commitment to putting people's privacy and safety first sets it apart in the industry. Candidates should be prepared to showcase their expertise in secure coding practices, application security tools, and cloud environments, as well as their ability to collaborate with development teams.
Job Description
About the Role
The Staff Security Engineer, Product Security role at Mozilla is a critical position focused on protecting the company's vision of a global public resource—open and accessible to all. As a key member of the security team, you will be responsible for embedding security into Mozilla's products, including Firefox and Mozilla VPN, to ensure they live up to the company's dedication to privacy and safety. This role is remote-friendly and open to candidates in the UK.The security team at Mozilla is dedicated to building, breaking, and hardening products to protect millions of users worldwide. As a Staff Security Engineer, you will work closely with development teams to integrate security throughout the software development lifecycle, providing security guidance, developing secure solutions, and facilitating secure releases.
What You Will Do
- Safeguard millions of users by embedding security into Firefox, Mozilla VPN, and other mission-critical products.
- Ensure software products are secure by embedding security into the full Software Development Life Cycle (SDLC).
- Anticipate, prioritize, and mitigate risks through proactive threat modeling, security assessments, security testing, and automation.
- Perform security code reviews to identify vulnerabilities and guide remediation efforts.
- Lead penetration testing on web, mobile, and embedded applications, then guide remediation efforts.
- Develop and maintain automated security tests within CI/CD pipelines to catch vulnerabilities early.
- Partner with engineers to integrate security throughout the software development lifecycle.
- Help define and enforce security policies and provide security guidance to development teams.
- Help shape Mozilla's security culture through collaboration, guidance, and education.
What We Are Looking For
- Expertise in secure coding practices, application security tools (SAST, DAST), and a strong understanding of modern architecture, cloud environments (AWS, Azure, GCP), and various programming languages.
- Experience in security code reviews, penetration testing, and security assessments.
- Strong understanding of security principles, including threat modeling, risk management, and secure design patterns.
- Experience working with development teams to integrate security into the software development lifecycle.
- Excellent communication and collaboration skills, with the ability to guide remediation efforts and provide security guidance to development teams.
- Experience with automated security testing and CI/CD pipelines.
- Strong problem-solving skills, with the ability to analyze complex security issues and develop effective solutions.
Nice to Have
- Experience with cloud security, containerization, and serverless architecture.
- Familiarity with agile development methodologies and DevOps practices.
- Experience with security orchestration, automation, and response (SOAR) tools.
- Certification in security, such as CISSP, CEH, or OSCP.
Benefits and Perks
- Competitive salary and benefits package.
- Opportunity to work on high-impact projects that protect millions of users worldwide.
- Collaborative and dynamic work environment with a team of experienced security professionals.
- Flexible working hours and remote work options.
- Professional development opportunities, including training and conference attendance.
- Access to the latest security tools and technologies.
How to Stand Out
- When applying for this role, be sure to highlight your experience with secure coding practices, application security tools, and cloud environments.
- Showcase your ability to collaborate with development teams and provide security guidance.
- Be prepared to discuss your approach to threat modeling, risk management, and secure design patterns.
- Familiarize yourself with Mozilla's products and security culture to demonstrate your passion for the company's mission.
- Consider including examples of your experience with automated security testing and CI/CD pipelines in your application.
- Be prepared to discuss your experience with security code reviews, penetration testing, and security assessments during the interview process.
This is a remote position listed on WFA Digital, the platform for professionals who work from anywhere. Browse more remote jobs across all categories.