Security Engineer - Applied AI

Meta is building AI-augmented security capabilities through its Applied Artificial Intelligence (AAI) organization. In this role, you will help advance Security, Trust, and Safety by combining security engineering with adversarial research and detection/response development, with the goal of improving defenses at Meta scale.

This position is based in New York, NY (onsite) and offers a salary range of USD 184,000 - 257,000 per year.

What you’ll do

• Identify and solve ambiguous problems across Security, Trust, or Safety where the solution and requirements are not fully defined, delivering work that impacts multiple teams
• Architect security systems and capabilities that can be adopted broadly as standards across teams
• Drive platform-level decisions for AI-driven security solutions operating at scale
• Lead strategy and methodology for adversarial research, threat intelligence programs, and AI-augmented detection systems or investigation capabilities
• Define how security expertise translates into AI improvements by creating methodologies that make model improvement systematic and scalable
• Set and continuously improve quality standards for security engineering practices and processes across teams
• Define processes and workflows that enable scale and automation
• Build cross-organizational partnerships to shape how security and AI intersect, influencing technical direction beyond the immediate team
• Break complex problems into scoped workstreams, owning the most technically complex areas while enabling others to execute
• Mentor engineers across the organization, help build a community, and serve as a role model for security engineering practices and Meta values
• Support team-wide adoption of practices and standards, including proactive communication of updates to leadership audiences
• Share results through internal publications, knowledge sharing, and contributions to the broader security community

Required skills

• B.S. or M.S. in Computer Science, Cybersecurity, or a related field, or equivalent experience
• 8+ years of hands-on security engineering experience in one or more areas such as detection engineering, threat intelligence, incident response, cloud security, adversary simulation, offensive security, mobile/platform security, digital forensics, trust and safety
• Deep expertise in attacker tactics, techniques, and procedures with a demonstrated ability to advance the state of the art
• Proficiency in coding, including experience with Python or Rust
• Track record of architecting security systems or programs that operate at scale and influence how others build
• Demonstrated ability to define and drive complex, ambiguous problem spaces with group-level impact
• Experience driving alignment and resolution across multiple teams and cross-functional partners

Technologies

• Python
• Rust

Preferred qualifications

• Background in supply chain security, mobile platform security, network protocol security, or AI/ML security
• Experience leveraging AI tools to accelerate security workflows and enhance operational capability
• Demonstrated ongoing AI skill development (for example, prompt/context engineering and agent orchestration) and staying current with emerging AI technologies
• Experience with cloud security operations, cloud detection and response, or cloud-native defense
• Experience improving AI model performance through expert feedback, red teaming, or evaluation design
• Experience adhering to and implementing responsible, ethical AI practices such as risk assessment, bias mitigation, and quality/accuracy reviews
• Experience in forensic investigation, including reconstructing attack timelines from evidence across multiple sources
• Experience with hands-on investigations across the Trust & Safety domain
• Demonstrated ability to integrate AI tools to optimize or redesign workflows and drive measurable impact (such as efficiency gains and quality improvements)
• Contributions to the security community through original research, tools, conference presentations, or publications
• Experience creating structured methodologies that scale security expertise across teams
• Experience planning and executing adversary simulation campaigns or purple team exercises at scale