**Summary:** Meta's Client Security team is seeking experienced Security Engineer 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. **Required Skills:** Client Security Engineer Responsibilities: 1. Drive Meta's trusted devices strategy by building tools that enable connectivity to our infrastructure only from Meta owned and managed devices 2. Build machine attestation and secure certificate storage solutions to enable provable client identity 3. Deploy systems that help mitigate security risks by understanding and controlling what software is allowed to execute on our client devices 4. Develop, validate, and enforce our client security policies 5. Build and deploy tools and automation that proactively detect and respond to security risks and threats to internal corporate services 6. Advise and collaborate with other teams **Minimum Qualifications:** Minimum Qualifications: 7. 5+ years of combined experience designing and deploying security infrastructure (such as PKI, key management, and certificate management) 8. 2+ years of software development experience in PHP, Golang, Python, C\C++, Rust, or Ruby 9. Experience applying fundamental security concepts to systems 10. B.S. in Computer Science or a related field, or equivalent experience **Preferred Qualifications:** Preferred Qualifications: 11. Mobile Security Experience on iOS and Android platforms including MDM, security policy 12. OS development experience (Windows, Mac, Linux) 13. Experience managing PKI for client devices **Public Compensation:** $147,000/year to $208,000/year + bonus + equity + benefits **Industry:** Internet **Equal Opportunity:** Meta is proud to be an Equal Employment Opportunity and Affirmative 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 accommodations-ext@fb.com.