[Hiring] Security Architect, AI Infrastructure @Fluidstack

Role Description

You're securing the frontier of AI. The model weights training on our infrastructure are the most valuable and most targeted artifacts in technology, and we're standing up the compute to hold them faster than anyone ever has. A breach isn't a leak, it's the frontier walking out the door.

• Build the entire security program from scratch.
• Your threat surface is measured in gigawatts.
• Own the attack surface unique to frontier compute: model weights custody, training environment isolation, accelerator and interconnect security, and multi-tenant boundaries under real adversarial pressure.
• Design the reference architectures and standards that security engineering builds to, keeping the seam between design and build clean enough that both sides move fast.
• Treat the workload as part of the threat model, and architect environments that stay defensible even when the thing running inside them is the adversary.
• Run security design review for the systems that touch training and inference environments, from bare metal and fabric to scheduler and storage.
• Track where frontier compute is going (new accelerators, interconnect generations, confidential computing, agentic workloads) and have the architecture ready before it lands.

Qualifications

• You've secured AI, ML, or HPC infrastructure where the assets were genuinely worth stealing: lab infrastructure security, supercomputing centers, or research environments that drew nation-state attention.
• You can architect isolation at every layer it exists: hardware, firmware, hypervisor, kernel, container, network fabric, and physical.
• You understand AI compute infrastructure as a system (accelerators, high-speed interconnects, parallel storage, schedulers) and know where each component breaks a classical security assumption.
• You've done original work in systems or ML security, published or shipped, and can turn research into architecture that engineers actually build.
• You defend design decisions in review on their merits, and change them when someone closer to the metal proves you wrong.

Requirements

• Bonus: Confidential computing and attestation depth.
• Weights custody or cryptographic key custody at scale.
• A publication record in systems or ML security.

Company Description

Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.

You will receive a confirmation email once your application has successfully been accepted. If there is an error with your submission and you did not receive a confirmation email, please email [email protected] with your resume/CV, the role you've applied for, and the date you submitted your application-- someone from our recruiting team will be in touch.