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Security Engineer, Trust & Safety - Applied AI

Meta· Applied AI / Trust & Safety
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Hybrid (Menlo Park, CA)$154k - $217kFull-timePosted 4d ago

About the role

Security Engineer role within Meta's Applied Artificial Intelligence organization focused on Trust & Safety. Applies deep domain expertise in abuse and adversarial behavior across domains such as child safety, fraud, and coordinated inauthentic behavior to advance AI systems. Combines Trust & Safety expertise with AI to improve model capabilities and evaluation at scale.

Responsibilities

  • Identify and solve ambiguous problems within a Trust & Safety domain where the solution and requirements are initially unknown, driving solutions that affect multiple teams
  • Architect Trust & Safety capabilities and evaluation infrastructure that set the standard across teams; drive platform-level decisions for AI-driven solutions at Meta's scale
  • Lead the strategy and methodology for the abuse problems AI cannot yet reason about: age-aware policy boundaries, adversaries who adapt to enforcement, abuse at campaign scale, and policy interpretation under pressure
  • Shape how Trust & Safety expertise translates into AI capability: define the methodologies that make model improvement systematic and scalable
  • Drive cross-organizational partnerships that define how Trust & Safety and AI intersect: influence technical direction beyond the immediate team
  • Break down problems into smaller scoped workstreams, owning the most technically complex pieces while enabling others to execute against the overall solution
  • Mentor other engineers across the organization, build community, and act as a role model for Trust & Safety engineering practices and Meta values
  • Disseminate findings through internal publications, knowledge sharing, and contributions to the broader community

Qualifications

  • B.S. or M.S. in Computer Science, Cybersecurity, or related field, or equivalent experience. OR PhD + 2 years of hands-on engineering experience
  • 5+ years of hands-on engineering experience in Trust & Safety, integrity, fraud and abuse, or security investigations
  • Demonstrated depth in at least one abuse domain: child safety and youth protection, dangerous organizations and violent extremism, fraud and scams, coordinated inauthentic behavior and information operations, or content policy enforcement
  • Experience building detection, enforcement or evaluation systems in an abuse domain, in addition to operating or investigating within one
  • Experience analyzing and interpreting large-scale data, including relational databases and SQL, to identify patterns of adversarial behavior and quantify trends
  • Experience investigating and acting on high-impact threats and online threat actors
  • Experience coding in at least one of PHP, Python, or Java

Skills

Required:Problem solving in ambiguous domain environmentsArchitecting evaluation infrastructurePolicy strategy for abuse domainsModel improvement methodologiesCross-organizational collaborationMentoring and leadershipDissemination of findings

Benefits

  • Benefits information is provided in the job description; please refer to Meta's benefits page in the posting for specifics.
Last updated Oct 23, 2026. Interested? Apply on the company site.

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