Security Engineer - Client Security

Meta’s Client Security team is seeking experienced Security Engineers who have a track record of solving complex security problems at scale. Client Security Engineers design and develop solutions to ensure Meta’s data and systems can only be accessed by trusted devices, and that applicable security policies are enforced on devices., * Drive Meta’s trusted devices strategy by building tools that enable connectivity to our infrastructure only from Meta owned and managed devices

• Build machine attestation and secure certificate storage solutions to enable provable client identity
• Deploy systems that help mitigate security risks by understanding and controlling what software is allowed to execute on our client devices
• Develop, validate, and enforce our client security policies
• Build and deploy tools and automation that proactively detect and respond to security risks and threats to internal corporate services
• Advise and collaborate with other teams

• 2+ years of combined experience designing and deploying security infrastructure (such as PKI, key management, and certificate management)
• 2+ years of software development experience in PHP, Golang, Python, C\C++, Rust, or Ruby
• Experience applying fundamental security concepts to systems
• B.S. in Computer Science or a related field, or equivalent experience, * Experience managing PKI for client devices
• Mobile Security Experience on iOS and Android platforms including MDM, security policy
• Demonstrated ability to integrate AI tools to optimize/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements)
• Experience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)
• OS development experience (Windows, Mac, Linux)
• Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies

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.