Infrastructure Security Engineer

Benefits

Parental leave

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Non-birth-parent leave

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Family-building benefits

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Mental health support

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Relocation assistance

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Childcare support

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Learning budget

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Role

Role function

Security From the posting source checked Jun 20, 2026

Seniority

Mid From the posting source checked Jun 20, 2026

Work mode

Onsite From the posting source checked Jun 20, 2026

In-office days

5 days From the posting source checked Jun 20, 2026

Schedule

Shift type

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Weekend work

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Company

Equity

Offered From the posting source checked Jun 20, 2026

Application

Cover letter

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Assessment

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Deadline

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Where they hire

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About this role

Infrastructure Security Engineer San Francisco, CA | OnSite About the role Own infrastructure security across the systems that train and serve frontier models. Your expertise spans supply chain, identity and secrets, multi-cloud Kubernetes, workload isolation, runtime defense, and detection and response across thousands of compute nodes. What you'll do - Audit and harden multi-cloud Kubernetes clusters - Design authorization, admission, and workload isolation policy - Secure the software supply chain from build to deploy - Manage identity and secrets across clusters and accelerators - Protect high-value assets including model weights and training data - Build detection and response tooling for clusters, workloads, and the underlying fabric What you'll need - BS in CS, EE, or related field, or equivalent experience - Software engineering skills: Rust, Go, or Python - Strong Linux internals: namespaces, cgroups, seccomp, capabilities - Deep Kubernetes security: authz, admission, workload isolation, runtime defense - Software supply chain security: SBOM, signing, attestation - Identity and secrets management - Experience protecting high-value assets (model weights, training data, or equivalent) - Track record in detection, response, and threat modeling - Multi-cloud experience: AWS, GCP, Azure, CoreWeave, Crusoe What we offer - Top-tier compensation structured to recognize and retain the best talent - Meaningful equity - Comprehensive medical, dental, vision, life, and disability insurance - Parental leave for all new parents, including adoptive and surrogate journeys - Flexible PTO - Paid Holidays - Relocation support Equal Employment Opportunity We're an Equal Opportunity Employer and do not discriminate on the basis of

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