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Security Engineer

Meta· Client Solutions
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LondonFull-timePosted 4w ago

About the role

Security Engineer role at Meta focused on protecting users and infrastructure through security assessments, vulnerability research, threat modeling, and scalable mitigations. Collaboration with engineering teams to embed security into the software development lifecycle and leading incident response and oncall responsibilities.

Responsibilities

  • Conduct security assessments, penetration testing, and vulnerability research across Meta's web, mobile, and backend systems to identify and remediate security risks
  • Perform threat modeling and security architecture reviews for new and existing products and infrastructure
  • Identify systemic security gaps and drive cross-functional mitigations that scale beyond individual findings
  • Develop and improve security tooling, automation, and detection capabilities to enhance the team's ability to identify and respond to threats
  • Collaborate with product and infrastructure engineering teams to define security requirements and integrate security controls into the software development lifecycle
  • Lead complex security investigations and incident response efforts, coordinating with cross-functional partners to resolve issues and prevent recurrence
  • Translate security findings into actionable, prioritized recommendations for engineering and leadership audiences through clear written documentation
  • Mentor other engineers on security best practices, contribute to team culture, and support recruiting and onboarding efforts
  • Manage oncall security responsibilities independently, triaging and resolving security issues with cross-functional support as needed
  • Identify and land new security initiatives on the team roadmap that address high-complexity, ambiguous risk areas aligned with broader team strategy

Qualifications

  • 6+ years of experience in security engineering, including hands-on work in penetration testing, vulnerability research, or security assessments of web, mobile, or backend systems
  • Experience performing threat modeling and security architecture reviews for large-scale software systems
  • Experience identifying systemic security risks and driving cross-functional remediation efforts that result in scalable, durable improvements
  • Experience developing or improving security tooling, automation, or detection capabilities to support team-level security operations
  • Experience communicating security findings and risk assessments in writing to both technical and non-technical stakeholders

Skills

Required:Security engineeringPenetration testingVulnerability researchThreat modelingSecurity tooling/automation
Last updated Oct 23, 2026. Interested? Apply on the company site.

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