Product Security Engineer: Build Resilient, Scalable Defense

Meta; Menlo Park (CA); On-site; USD 154,000 - 217,000; Full time

Job summary

Meta's Security Engineering team is looking for a Security Engineer to help protect the billions of people who use Meta's family of products and services. In this role, you will identify and mitigate security vulnerabilities across Meta's infrastructure, applications, and platforms, working closely with engineering and product teams to drive systemic security improvements at scale.

You will apply deep technical expertise in offensive and defensive security to reduce risk and build resilient

Qualifications

• 5+ years of experience in security engineering, including vulnerability research, penetration testing, or security assessments of applications and infrastructure.
• Experience identifying and exploiting common vulnerability classes such as memory corruption, injection flaws, authentication bypasses, or privilege escalation.
• Experience developing security tooling, automation, or detection frameworks in one or more general-purpose programming or scripting languages.
• Experience conducting threat modeling and security design reviews for large-scale distributed systems or web and mobile applications.
• Experience collaborating with cross-functional engineering teams to drive security mitigations and communicate risk in written and verbal formats.

Responsibilities

• Conduct security assessments, threat modeling, and code reviews across Meta's products and infrastructure to identify and remediate vulnerabilities.
• Develop and implement scalable security tooling, automation, and frameworks to detect and prevent security issues across the engineering organization.
• Partner with engineering and product teams to embed security requirements into the design and development lifecycle.
• Investigate security incidents and drive root cause analysis, translating findings into systemic mitigations and process improvements.
• Identify gaps in security coverage and drive cross-functional efforts to close them through tooling, policy, or architectural changes.
• Turn one-off vulnerability findings into repeatable detection and remediation patterns that scale across the codebase.
• Represent the security team in cross-functional collaborations, communicating risk posture and mitigation strategies to engineering leadership.
• Mentor other engineers on secure coding practices, vulnerability classes, and security review methodologies.
• Manage and independently resolve security incidents, coordinating with cross-functional partners to drive timely remediation.

Skills

Security engineering

Vulnerability research

Penetration testing

Threat modeling

Security design reviews

Cross-functional collaboration

Education

Bachelor's or Master's degree in Computer Science or related field

Tools

Security tooling

Automation scripts

Detection frameworks

Job description

Meta's Security Engineering team is looking for a Security Engineer to help protect the billions of people who use Meta's family of products and services. In this role, you will identify and mitigate security vulnerabilities across Meta's infrastructure, applications, and platforms, working closely with engineering and product teams to drive systemic security improvements at scale.

You will apply deep technical expertise in offensive and defensive security to reduce risk and build resilient