[Skip to main content](#main-content) [ OpenNash ](https://opennash.com/) / [Jobs](https://jobs.opennash.com/) [ 01 Search jobs](https://jobs.opennash.com/search/)[ 02 Companies](https://jobs.opennash.com/explore/)[ 03 Hiring report](https://jobs.opennash.com/reports/hiring/)[ 04 AI assistants](https://jobs.opennash.com/connect/)[ 05 How it works](https://jobs.opennash.com/methodology/) Meta Platforms · Fremont, CA # Security Engineer - Client Security Fremont, California, US Full-time Security Listed on Meta Platforms’s official careers site. Posted October 22, 2026. Check that it is still open and apply there. [Apply on Meta Platforms’s careers site →](https://www.metacareers.com/jobs/991877626535287/) [OpenNash Jobs](https://jobs.opennash.com/) / [Meta Platforms](https://jobs.opennash.com/companies/meta-platforms/) / Security Engineer - Client Security ## Job description 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. ## Responsibilities - 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 ## Qualifications - 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 ## At a glance - Posted by the employer: Oct 22, 2026 - First seen by OpenNash: Nov 1, 2026 - Last checked: Nov 1, 2026 - Listed for: 10 days - Location: Fremont, California, US - Employment type: Full-time[Apply on Meta Platforms’s careers site →](https://www.metacareers.com/jobs/991877626535287/) ## Hiring at Meta Platforms - Open jobs: 1,310 - New in the last 7 days: After two weekly collections - Tracked since: Jul 11, 2026 [All Meta Platforms jobs](https://jobs.opennash.com/companies/meta-platforms/) · [Weekly hiring report](/reports/hiring/) ## More jobs at Meta Platforms ### [Failure Analysis Engineer](https://jobs.opennash.com/companies/meta-platforms/jobs/1525146e8a406b23010e/) Fremont, California, US ### [Application Security Engineer, Privacy](https://jobs.opennash.com/companies/meta-platforms/jobs/21ed78a1d402c1425ef5/) Menlo Park, CA ### [Detection & Response Security Engineer, Intern (Summer 2027)](https://jobs.opennash.com/companies/meta-platforms/jobs/5121b26bf5c07ba6cdf6/) New York, NY ### [Director, Security Engineering - i3E](https://jobs.opennash.com/companies/meta-platforms/jobs/92dd279cc8c07d65edf7/) Bellevue, WA +3 more ### [Director, Security Risk Program](https://jobs.opennash.com/companies/meta-platforms/jobs/f53d26bd7980c4a430fc/) Washington, DC ## Similar jobs at other companies ### [Security Operations Engineer - Cloud Security](https://jobs.opennash.com/companies/microsoft/jobs/ce684c21104b72ac6699/) Microsoft · United States, Washington, Redmond ### [Senior Security Engineer – Akamai & Edge Security Services](https://jobs.opennash.com/companies/cvs-health/jobs/d22650e4c91ab2010476/) CVS Health · New York, NY ### [Senior Information Security Engineer - Security Engineering](https://jobs.opennash.com/companies/williams-sonoma/jobs/5f7981b5cfc0b09eb417/) Williams-Sonoma · Rocklin, CA, United States ### [Senior Security Engineer and Principal Security Engineer (Services)- Multiple Positions](https://jobs.opennash.com/companies/microsoft/jobs/b6753970a16d429916ee/) Microsoft · United States, Multiple Locations ### [Senior Information Security Engineer - Security Firewall Policy](https://jobs.opennash.com/companies/williams-sonoma/jobs/3cdd68d69fdb589a5156/) Williams-Sonoma · Rocklin, CA, United States OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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