Brainco
AI Infrastructure Security Engineer
San Francisco Bay Area · Senior
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About the role
- As our Security Engineer, Infrastructure, you'll secure the platform layer end-to-end including cloud infrastructure, Kubernetes, identity, networking, and the systems that AI runs on.
- You'll also be thinking a step ahead about security in an AI-native environment, where agents write code and operate inside developer and production workflows, while staying grounded in the core work of cloud, Kubernetes, identity, and networking.
- Harden infrastructure end-to-end from cloud networking and service meshes to CI/CD pipelines and the data and model pipelines powering Brain Co's AI capabilities work.
Responsibilities
- Brain Co. builds AI-native operating systems for large, regulated institutions.
- Every project here ships to production and is expected to create measurable customer value and impact.
- You'll write code, ship infrastructure, and work shoulder-to-shoulder with our infra team as a true engineering partner, not a reviewer.
- It's a high-ownership role for someone who wants to build secure-by-default infrastructure from first principles, and grow the function as the company scales.
- Implement Zero Trust principles and machine identity across workloads; short-lived credentials, least-privilege access, and encrypted service communication.
- Protect customer data and the agent workloads running on our platform. Design secure execution environments and data access pathways for code and actions taken by agents on our systems.
Requirements
- Have 5+ years of experience in security engineering, infrastructure, or SRE with hands-on experience building or securing production systems at scale.
- Have hands-on experience with Kubernetes, container security, and Linux systems.
- Have experience with authentication and authorization systems, secrets management, and cryptography basics.
- Experience with ML systems or multi-tenant platform isolation.
- Familiarity with service mesh and zero-trust architectures.
- Proficiency in Go, Python, or a similar language for automation and tooling.
Skills
- Are fluent in cloud security fundamentals (IAM, networking, KMS, secrets, isolation) across AWS, GCP, or Azure.
Compensation
- Earn competitive compensation and meaningful equity in a high-growth company.
Benefits
- Competitive salary plus equity
- Commuter benefits
- Medical, Dental, and Vision
- Earn competitive compensation and meaningful equity in a high-growth company.
Company info
- Rebuild how the world works, to make institutions work better for the people they serve.
- ABOUT BRAIN CO.
- Each system is built for a specific industry, powered by agents that push real workflows forward.
- Underneath it all is Atlas, our proprietary platform that keeps customers in control, secure by design, and never locked into one model.
- Brain Co. is entering its next phase of production deployments on a national scale with an elite team built from Palantir, Google, Meta, and Nvidia, and a growing footprint across government, insurance, health, and financial services.
- Joining now means shaping both the company and a new category of applied AI.
- You'll work alongside exceptional peers on some of the hardest problems in applied AI.
- It's the kind of work you'll still be proud of in ten years from now.
This listing is sourced directly from Brainco's careers page and normalized into a canonical job model.