Security Engineer, OT
About The Position
Fluidstack is hiring a Security Engineer focused on operational technology (OT) security. The role will help secure frontier AI compute infrastructure, building and operating security protections for industrial systems across a growing, global fleet. The engineer will work across physical and logical security concerns, from bare metal systems to enterprise-level security planning. The position spans OT threat modeling, architecture and segmentation, deployment security, consultation with engineering and site teams, detection and incident response, and hardware supply-chain security. It involves working closely with controls, power, commissioning, detection and response, and site teams as new capacity comes online.
Requirements
- Production security experience with substations, SCADA, or controls systems, including Ignition or comparable platforms, PLCs, relays, and industrial protocols.
- Experience threat modeling OT environments and translating findings into workable segmentation and controls.
- Knowledge of the Purdue Model and the ability to adapt it for virtualized PLCs and software-defined OT environments.
- Hands-on experience with OT security tools such as Claroty, Nozomi, Dragos, or similar, including understanding their visibility and limitations.
- Knowledge of BMS, EPMS, and cooling systems sufficient to work effectively with the engineers who operate them.
- Experience advancing security in engineering teams through consultation and design review rather than direct authority.
Nice To Haves
- Depth in NERC CIP or IEC 62443.
- Experience securing virtualized or containerized industrial control systems.
- Commissioning-phase security work at construction sites.
Responsibilities
- Threat model OT systems and environments across the fleet, including SCADA platforms, BMS and EPMS, cooling and power systems, and sensor networks.
- Design OT security architecture and segmentation, including network zones, remote-access paths, and IT/OT boundaries.
- Work with controls engineering to secure operational deployments, including PLC code pipelines, virtualized controllers, and SCADA systems.
- Advise power, controls, commissioning, and site teams as new capacity comes online, translating security reviews into deployable guidance.
- Work with detection and response teams to assess and tune OT detection coverage, and respond to incidents affecting OT infrastructure.
- Lead engagements with hardware OEMs on product security requirements, including firmware security, tamper evidence, and counterfeit detection.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
