Fluidstack
Security Engineer, Offensive Security
$224K–$275K
San Francisco, CA +5 · On-site · Full-time · Posted Oct 30, 2026
- Location
- San Francisco, CA
New York, NY
Austin, TX
U.S. Remote
London
Seattle, WA - Experience
- Years of hands-on experience; no specific number stated.
About the job
Conduct offensive security testing across Fluidstack’s AI compute infrastructure, data center OT, applications, and customer platform, and help improve security practices.
What you'll do
- Run red and purple team operations and penetration tests across networks, data center OT, applications, and customer-facing services.
- Test tenant isolation, identity controls, CI/CD pipelines, and IT/OT boundaries; translate recurring findings into secure defaults.
- Collaborate on AI-specific attack scenarios and AI-assisted testing tools, and present actionable findings to technical and executive audiences.
What they ask for
- Hands-on experience in red teaming and offensive security operations.
- Deep expertise in at least two of: enterprise and data center networks, OT/ICS, web and API applications, cloud (AWS, GCP, Azure), Kubernetes, or CI/CD pipelines.
- Experience chaining vulnerabilities into full compromise and running adversary simulations against well-defended environments.
- Quality coding skills in Python, Go, or similar languages; experience using AI in real offensive engagements.
Nice to have
- Experience with state-nexus threat models, data center facility systems, or high-performance and data center networking.
- Experience testing AI and ML systems or in defensive security.
Pay
$224K – $275K (base salary or total pay not specified)
Tools
AWS, GCP, Azure, Kubernetes, CI/CD, Python, Go, LLMs
AI focus
Test AI-specific attack scenarios, including agentic systems, and use LLMs and agents in offensive engagements; contribute to AI-assisted testing tools and workflows.
Model-written summary · the original posting is authoritative