Security Engineer

Meta; Menlo Park (CA); On-site; USD 271,000 - 347,000; Full time

Job summary

Meta's Cross-Meta Security organization seeks a distinguished Security Engineer to lead at the top technical level across the company's most complex security challenges. You will shape strategy across pillars, drive engineering excellence at scale, and mitigate systemic risk across global infrastructure, products, and platforms.

You will partner with senior leadership to set direction, influence the security community, and deliver solutions protecting billions of people and their data.

Qualifications

• 15+ years of security risk management experience at large scale.
• Experience driving cross‑company security initiatives spanning complex infrastructure.
• Proven ability to define pillar‑level security goals and roadmaps.
• Strong skills in threat modelling, risk assessment and security controls.
• Excellent written communication to senior and non‑technical stakeholders.

Responsibilities

• Define and drive security strategy and engineering standards at pillar level.
• Lead threat modelling and risk assessments for complex systems.
• Architect and implement engineered security controls and guardrails.
• Partner with leadership to set pillar goals and drive execution.
• Identify gaps in the pillar's security stack and deliver scalable solutions.
• Mentor engineers and contribute to leadership development.
• Represent Meta's security posture internally and externally.
• Leverage AI‑integrated workflows to improve threat detection and efficiency.
• Ensure decisions align with compliance and responsible AI practices.
• Communicate risk trade‑offs clearly to technical and non‑technical audiences.

Skills

Security strategy

Risk assessment

Threat modelling

System design

Security leadership

Job description

Meta's Cross-Meta Security organization is seeking a distinguished Security Engineer to operate at the highest level of technical leadership across the company's most complex and consequential security challenges. In this role, you will define security strategy across entire pillars, drive engineering excellence at scale, and shape how Meta identifies and mitigates systemic risk across its global infrastructure, products, and platforms. You will partner with senior leadership to set direction, influence the broader security community, and deliver solutions that protect billions of people and their data.

Security Engineer Responsibilities:

• Define and drive security strategy and engineering standards across multiple sub-pillars, setting the quality bar for security practices, processes, and tooling at a pillar-wide scale
• Identify and solve ambiguous, high-impact security problems spanning distributed systems, access control, encryption, and intrusion detection that affect entire organisational pillars
• Lead threat modelling and risk assessment efforts for Meta's most complex systems, developing novel approaches to address systemic vulnerabilities across the company
• Architect and implement engineered security controls, guardrails, and defence-in-depth mechanisms that enable product teams to move fast while managing risk responsibly
• Partner with senior leadership across multiple organisations to define pillar-level security goals, influence roadmaps, and drive accountability for execution across cross‑functional teams
• Identify capability and tooling gaps across the pillar's security stack and drive technical solutions that achieve scale, automation, and measurable risk reduction
• Mentor and develop other engineers and technical leaders across organisations, contributing to hiring at leadership levels and fostering a culture of security excellence
• Represent Meta's security posture and technical narrative internally and externally, influencing the broader security community through thought leadership and published insights
• Leverage AI‑integrated workflows to redesign security analysis, threat detection, and engineering processes, driving measurable improvements in quality and operational efficiency
• Ensure security decisions align with Meta's compliance obligations, ethical standards, and responsible AI practices, and communicate risk trade‑offs clearly to technical and non‑technical stakeholders

Minimum Qualifications:

• 15+ years of experience managing security risk and navigating trade‑offs between security and operational friction in large‑scale organisations
• Experience driving cross‑company security engineering initiatives spanning distributed systems, access control, encryption, and intrusion detection
• Experience with system design, threat modelling, and risk assessment across complex, multi‑layered infrastructure and product environments
• Experience building engineered security controls and guardrails applying principles such as least privilege, defence in depth, and segmentation
• Experience communicating complex security risk and technical decisions in writing to both technical and non‑technical stakeholders, including senior leadership

Preferred Qualifications:

• Experience influencing the external security community through published research, conference presentations, or open‑source contributions
• Experience adhering to and implementing responsible, ethical AI practices including risk assessment, bias mitigation, and validation of AI‑generated outputs in security contexts
• Demonstrated ability to integrate AI tools to redesign security workflows and drive measurable impact such as efficiency gains or improved threat detection quality
• Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies
• Experience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)
• Demonstrated ability to integrate AI tools to optimise/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements)
• Experience applying current threat intelligence on adversary tactics, techniques, and procedures to proactively shape defensive security architecture at scale

About Meta:

Meta builds technologies that help people connect, find communities, and grow businesses. When Facebook launched in 2004, it changed the way people connect. Apps like Messenger, Instagram and WhatsApp further empowered billions around the world. Now, Meta is moving beyond 2D screens toward immersive experiences like augmented and virtual reality to help build the next evolution in social technology. People who choose to build their careers by building with us at Meta help shape a future that will take us beyond what digital connection makes possible today—beyond the constraints of screens, the limits of distance, and even the rules of physics.

Meta is proud to be an Equal Employment Opportunity and affirmative action employer. We do not discriminate based upon race, religion, colour, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law. Meta participates in the E‑Verify programme in certain locations, as required by law. Please note that Meta may leverage artificial intelligence and machine learning technologies in connection with applications for employment.

Meta is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at [e-mail].

$271,000/year to $347,000/year + bonus + equity + benefits

Individual compensation is determined by skills, qualifications, experience, and location. Compensation details listed in this posting reflect the base hourly rate, monthly rate, or annual salary only, and do not include bonus, equity or sales incentives, if applicable. In addition to base compensation, Meta offers benefits. Learn more about benefits at Meta.