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Security Engineer, OT

Fluidstack· Security & Corp IT
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San Francisco, CA, New York, NY, Austin, TX, U.S. Remote, Seattle, WA$275k - $344kFull-timePosted today

About the role

Role focused on securing OT environments for Fluidstack's frontier-scale infrastructure, including threat modeling, architectural design, and collaboration with hardware/controls teams to deploy security across SCADA, BMS, EPMS, and related OT systems.

Responsibilities

  • Threat model OT systems and environments across the fleet: SCADA platforms, BMS and EPMS, cooling and power systems, and the sensor networks that feed them.
  • Design the architecture and segmentation that keeps a gigawatt-scale OT estate defensible: network zones, remote access paths, and the IT/OT boundary.
  • Forward-deploy with controls engineering to secure operational deployments, from PLC code pipelines and virtualized controllers to the SCADA layer above them.
  • Serve as the security consultant to power, controls, commissioning, and site teams as new capacity energizes, turning review requests into guidance teams can actually deploy.
  • Work with the detection and response org to understand and tune OT-environment detection coverage, and respond alongside incident responders when attacks reach OT infrastructure.
  • Lead engagements with hardware OEM’s on product security requirements and use cases such as firmware security, tamper evidence, and counterfeit detection to address supply chain risk.

Qualifications

  • You've secured substations, SCADA, or controls systems in production: Ignition or comparable platforms, PLCs, relays, and the industrial protocols beneath them.
  • You've threat modeled OT environments and turned the results into segmentation and controls that operators could live with.
  • You think in the Purdue Model and know when to break it, because virtualized PLCs and software-defined OT don't always fit the reference architecture.
  • You've worked hands-on with common OT security tooling (Claroty, Nozomi, Dragos, or similar) and know what each class of tool can and can't see.
  • You know BMS, EPMS, and cooling systems well enough to hold your own with the engineers who run them.
  • You've moved security forward in engineering teams that don't report to you, through consultation and design review rather than mandate.
  • Bonus: NERC CIP or IEC 62443 depth. Securing virtualized or containerized industrial control. Commissioning-phase security work at construction sites.

Skills

Required:OT security risk assessment and threat modelingIndustrial control systems (ICS) security toolingPurdue Model familiaritySystems security collaboration with engineering teams
Last updated Oct 27, 2026. Interested? Apply on the company site.
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About Fluidstack

Fluidstack builds civilization-scale infrastructure for AI

Fluidstack builds civilization-scale infrastructure for AI, delivering gigawatts of compute in 6 months. We're leading the deployment of Anthropic's $50B compute build out.

AI infrastructurecompute centershardwaresoftwarepowerdata centersAnthropicfrontier compute
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