Security Engineer, Exposure and Vulnerability Management

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. If that is you, please apply!

How We Operate

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.

The Security Team

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.

Role Scope

Own exposure and vulnerability management across the estate: external attack surface, cloud and Kubernetes, corporate endpoints, network infrastructure, and the bare-metal fleet beneath them.

Extend exposure and vulnerability management across the corporate fleet (macOS, Windows, Linux): OS and application patch posture, first-party and third-party software, and drift from approved baselines.

Cover software outside our managed and approved catalogs: unmanaged apps and SaaS, package-level software on endpoints (npm, PyPI, Homebrew), and browser and IDE extensions. Identify it, assess it, and drive it to remediation or removal.

Build the engineering that makes it work: asset inventory, scanner orchestration, deduplication, and prioritization built on reachability and real-world exploitation rather than raw CVSS.

Engineer remediation into the workflows teams already use, so findings land as owned tickets, fixes ride existing pipelines, and closure verifies automatically.

Remediate alongside the teams that own the systems: write the patch PR, harden the base image, fix the IaC module, and ship the config change rather than just requesting it.

Extend the program past where enterprise playbooks run out: BMC and device firmware, GPU drivers, host images at fleet scale, and the long tail of data center equipment.

Run intake for pen test findings and external reports, and report exposure honestly: what's reachable, what's exploited in the wild, what's accepted and by whom.

What We're Looking For

• The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would.
• You've built vulnerability management as an engineering problem: pipelines, automation, and integrations rather than spreadsheet triage.
• You write production-quality automation (Python or similar) and have wired scanners, asset systems, and ticketing into something coherent.
• You've run prioritization that survives contact with reality: KEV, EPSS, reachability, and the judgment to overrule all three.
• You've fixed vulnerabilities yourself, in someone else's codebase or infrastructure, and your pull requests got merged because they were good, not because security demanded it.
• You've driven remediation at scale through teams that don't report to you and kept SLAs credible without burning the relationships.
• You can take a technology class most programs never touch, firmware or GPU stacks or data center equipment, and stand up a defensible assessment approach instead of waiting for a vendor to sell you one.
• You've run vulnerability and exposure coverage on corporate endpoints and third-party software, including the unmanaged long tail of shadow apps, packages, and extensions.
• Bonus: External attack surface management platforms. Firmware or BMC security depth. CSPM/KSPM tooling. Exploit development or reachability validation. Endpoint management and patching tooling (MDM, EDR), software inventory, and extension and supply chain risk.
• We are committed to pay equity and transparency.
• 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 careers@fluidstack.io 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.