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Jobs · Information Technology · Washington

Security Engineer, Network

Fluidstack · Seattle, WA · 2 wk ago
On-siteInformation Technology$182k–$210k/yrFull-time

We exist to make humanity more free. Technology has historically given people more time for the things they want to do, instead of things they have 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. 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.

About the team

The Security Team is 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 just a leak—it's the frontier walking out the door. You'll build the entire security program from scratch, owning it end-to-end, from bare metal to boardroom, as we scale across continents. Your threat surface is measured in gigawatts, supporting customers building the most consequential technology in human history.

Responsibilities

  • Design and defend the network security architecture across data centers, corp, and cloud: segmentation, firewalls, and east-west controls at gigawatt scale.
  • Build network detection: telemetry, flow analysis, and alerting across training fabrics, OT networks, and the WAN.
  • Harden the OT and BMS side, where the network touches physical plant, against threats most security teams never see.
  • Automate network security controls so new sites inherit the architecture on day one.

Requirements

  • You've secured production networks at scale and read a packet capture as comfortably as a dashboard.
  • You've designed segmentation for environments that mix IT, OT, and high-value compute.
  • You've deployed and tuned NDR or flow-based detection that found real intrusions.
  • You work infrastructure-as-code: your firewall rules live in a repo, not a GUI.
  • You've partnered with network engineering without becoming the department of no.

Nice to have

  • OT and ICS security experience.
  • Data center or cloud provider environments.
  • BGP and routing security.
  • Zeek or Suricata.

Pay

Compensation range: $182K - $210K.

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