FluidStack
Security Engineer, Cloud
About this role
Fluidstack seeks a Security Engineer to build and secure cloud and bare-metal infrastructure hosting frontier AI training workloads. You'll design security controls from scratch across hardened control planes, implement detection systems, and protect multi-tenant boundaries where some of technology's most valuable and targeted assets run.
What you'll do
- Harden and secure cloud and bare-metal control planes for AI training infrastructure
- Design identity management and workload isolation across multi-tenant environments
- Build security policies as code with automated scanning and enforcement
- Engineer detection and incident response systems for infrastructure threats
- Implement tenant escape prevention and API abuse detection
- Collaborate with engineering teams to make secure practices fast and adoptable
What they're looking for
- Production cloud infrastructure security (hands-on hardening, not auditing)
- Bare-metal and container security
- Kubernetes and container orchestration security
- Identity and access management systems
- Infrastructure-as-code and policy-as-code
- Detection engineering and incident response
- Privilege escalation and isolation vulnerability analysis
- eBPF-based detection and monitoring
Benefits
- Build security program from scratch at scale across continents
- Work on civilization-scale AI compute infrastructure
- Extreme ownership with end-to-end responsibility
- Committed to pay equity and transparency
- Opportunity to shape frontier AI safety and security
Opens the official application on the employer’s site. No login required.
FluidStack
FluidStack builds AI infrastructure at scale, developing data centers and warehouse operations designed to handle gigawatt-capacity compute deployment. The company is hiring for warehouse engineers, data center operations specialists, product engineers, and people leaders to support rapid infrastructure expansion across multiple sites.
- Website
- fluidstack.io
Likely interview questions
- Walk us through a production isolation or privilege-escalation vulnerability you found and fixed—what was the impact?
- Tell us about security tooling you've shipped that engineers actually adopted. What made it successful?