Security Engineer, Infrastructure

About Fluidstack

We exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we've ever built - but only if models are aligned with what humanity actually wants.

There are groups building AI who don’t share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it.

We’re singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them - with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI.

We hire people who care deeply about this problem space.

• Be a barrel. Full autonomy. Own things end to end, take on scope without being asked, no permission required to operate outside your core role.

• Insane urgency. We drive everything forward as fast as possible.

• Reason from first principles. Challenge every assumption. Zero analogy thinking, no egos, the best idea wins.

• Love of the game. The frontier of AI is the most interesting problem of our time. We put in long hours at high intensity to push the frontier forward.

• Build something that actually matters. If you're going to spend your time, spend it on something that matters to the world.

Examples of key problems the team is working on

• 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. Most leaders inherit someone else’s system and spend a career patching it. Here you own it end to end, bare metal to boardroom, as we scale across continents.

• Your threat surface is measured in gigawatts. The customers running on our infrastructure are building the most consequential technology in human history, and being responsible for the physical and logical security of that work makes everything else feel small.

• Be the hands‑on technical owner of the systems and pipelines that make the security program run: SIEM and data‑warehouse architecture, data ingestion and enrichment, and security tool engineering across IT, OT, cloud, and bare metal.

• Design, deploy, and operate security tooling and data infrastructure: log‑source onboarding, detection engineering, alert tuning, and pipeline management across IT and OT.

• Architect and maintain the security data platform: ingestion, normalization, enrichment, and routing of telemetry from endpoints, network, cloud, OT/ICS, and physical security tooling.

• Build and manage integrations across EDR, vulnerability management, SOAR, CASB, and identity platforms.

• Embed security into the software development lifecycle: CI/CD pipeline security, secrets management, artifact integrity, and review of security‑relevant changes.

• Build tooling for automated security‑data collection and quality validation, and partner with network, infrastructure, and IT teams to keep instrumentation complete across multi‑site facilities.

The below is a starting point. We always make space for exceptional people, so if you don’t fit this role exactly,

• You’ve designed, implemented, and maintained security infrastructure and tooling, and you want to build a modern stack from the ground up rather than maintain what exists.

• You know security system…