Security Engineer

Meta; Washington (District of Columbia); On-site; USD 154,000 - 217,000; Full time

Benefits offered by this job

Bonus

Equity

Benefits

Job summary

Meta's Central Security team is seeking a security engineer to identify weaknesses before attackers and build effective mitigations. You will guide AI security and native-code security decisions, impacting privacy and safety for billions of users.

The role combines hands-on analysis with cross‑functional leadership and proactive threat response. You'll drive security initiatives, assess threats across products, and collaborate with engineering teams to implement robust defense mechanisms.

Qualifications

• 6+ years of experience in security engineering, including vulnerability research, penetration testing, or security assessments of production systems
• 3-5+ years programming experience with at least one of the following languages: Python, PHP, Ruby, or similar scripting languages
• 4+ years of experience reviewing C and C++. Knowledge of best practice secure code development
• Working knowledge of security architecture principles, least privilege
• Experience identifying and mitigating security and privacy risks in internet-facing products or services

Responsibilities

• Provide security guidance on a constant stream of new products and technologies
• Take a leadership role in driving internal security and privacy initiatives
• Analyze, assess, and respond to various internet threats
• Interact directly with the security community regarding mobile security vulnerabilities and threats
• Conduct regular security assessments and specializing in mobile platform and application code

Skills

Python

PHP

Ruby

Security engineering

Vulnerability research

Penetration testing

Security assessments

Education

B.S. or M.S. in Computer Science or related field

Equivalent experience

Tools

C/C++

iOS/Android security model

Static analysis

Fuzzing

Reverse engineering

CTF experience

Job description

Meta's Central Security team is looking for a security engineer who can find weaknesses before attackers do and then build the solutions that eliminate them. Your work will form the foundation of security initiatives that protect the privacy and safety of more than three billion people. In this role, you'll be the expert that engineering and product teams turn to for AI security and native-code security guidance, giving them the confidence to make sound product decisions. Join us in protecting Meta's products and the people who use them.

Security Engineer Responsibilities

• Provide security guidance on a constant stream of new products and technologies
• Take a leadership role in driving internal security and privacy initiatives
• Analyze, assess, and respond to various internet threats
• Interact directly with the security community regarding mobile security vulnerabilities and threats
• Conduct regular security assessments and specializing in mobile platform and application code

Minimum Qualifications

• B.S. or M.S. in Computer Science or related field, or equivalent experience
• 6+ years of experience in security engineering, including vulnerability research, penetration testing, or security assessments of production systems
• 3-5+ years programming experience with at least one of the following languages: Python, PHP, Ruby, or similar scripting languages
• 4+ years of experience reviewing C and C++. Knowledge of best practice secure code development
• Working knowledge of security architecture principles, least privilege
• Experience identifying and mitigating security and privacy risks in internet-facing products or services

Preferred Qualifications

• Demonstrated ability to integrate AI tools to optimize/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements)
• Contributions to the security community (public research, blogging, presentations, bug bounty, etc.)
• Demonstrated knowledge of iOS or Android security model
• Knowledge of exploitation techniques, reverse engineering, or CTF experience
• Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies
• Experience leveraging or developing mitigations
• Experience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)
• Knowledge of memory safe programming languages: Rust, Obj-C , Java/Kotlin
• Experience with static analysis and fuzzing

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 Affirmitive Action employer. We do not discriminate based upon race, religion, color, 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 program 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].

$154,000/year to $217,000/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.