Offensive Security Engineer — AI Infra Red Team

Fluidstack; Sacramento (CA); On-site; USD 180,000 - 260,000; Full time

Job summary

Fluidstack seeks an experienced security professional to build and lead its offensive security program. You will perform red and purple team operations across cloud infrastructure, endpoints, and bare metal deployments, driving risk-based security improvements across the organization.

Ideal candidates bring hands-on red teaming, expertise in multiple platforms (macOS/Linux/cloud/Kubernetes), and strong Python/Go coding skills.

Qualifications

• Hands-on red teaming and offensive security experience.
• Expertise in at least two of macOS, Linux, cloud, Kubernetes, or CI/CD.
• Identify novel attack paths and chain vulnerabilities into full compromise.
• Run adversary simulations against well-defended environments.
• Proficient in Python or Go.
• Write actionable findings that drive remediation.
• Collaborate closely with blue teams.

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, firmware and BMCs, and data center OT.
• Partner with security and engineering teams on AI-specific attack scenarios.
• 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

macOS

Linux

Cloud platforms

Kubernetes

CI/CD

Python/Go

Threat modeling

Adversary simulations

Blue team collaboration

Vulnerability research

Tools

SIEM

EDR

Job description

Fluidstack seeks an experienced security professional to build and lead its offensive security program. You will perform red and purple team operations across cloud infrastructure, endpoints, and bare metal deployments, driving risk-based security improvements across the organization.

Ideal candidates bring hands-on red teaming, expertise in multiple platforms (macOS/Linux/cloud/Kubernetes), and strong Python/Go coding skills.