Offensive Security Engineer - AI Frontier Compute

Fluidstack; Austin (TX); On-site; USD 224,000 - 275,000; Full time

Job summary

Fluidstack is seeking a Senior Offensive Security Engineer to build an end-to-end offensive security program for its frontier AI compute platforms. You will run red and purple team operations across cloud, on-premise and bare-metal deployments, and lead pen-testing of critical systems.

You will collaborate with engineering and blue teams, craft AI-specific attack scenarios, develop offensive testing tools, and present clear risk findings to shape the security roadmap.

Qualifications

• Hands-on experience in red teaming and offensive security operations.
• Deep expertise in at least two: macOS, Linux, cloud, Kubernetes, CI/CD pipelines.
• Proven ability to find novel attack paths and chain vulnerabilities to full compromise.
• Experience conducting adversary simulations against well-defended environments.
• Writes quality code in Python, Go, or similar languages.
• Produces actionable findings to help teams fix and prioritize risk.
• Collaborates closely with blue teams.
• Bonus: state-nexus threat models, AI/ML testing, defensive security, hardware security.

Responsibilities

• Build Fluidstack's offensive security program from the ground up, including its methodology, tooling, and engagement cadence.
• Run red and purple team operations emulating advanced threat actors across our cloud infrastructure, endpoints and bare metal deployments.
• Pen test critical systems, including tenant isolation, bare metal GPU hosts, firmware and BMCs, and data center OT.
• Partner with security and engineering teams on AI-specific attack scenarios, including agentic systems and other novel AI-enabled risks.
• Contribute to AI-assisted offensive testing tools and workflows.
• Present findings to technical and executive audiences as clear, actionable risk that shapes the security roadmap.
• Live on the bleeding edge of AI-enabled offensive operations inside and outside our environments

Skills

Red teaming

Threat modeling

Adversary simulations

Python/Go coding

Tools

macOS

Linux

AWS

GCP

Azure

Kubernetes

CI/CD pipelines

Job description

Fluidstack is seeking a Senior Offensive Security Engineer to build an end-to-end offensive security program for its frontier AI compute platforms. You will run red and purple team operations across cloud, on-premise and bare-metal deployments, and lead pen-testing of critical systems.

You will collaborate with engineering and blue teams, craft AI-specific attack scenarios, develop offensive testing tools, and present clear risk findings to shape the security roadmap.