Fluidstack
Security Engineer, OT
$275K–$344K
San Francisco, CA +4 · On-site · Full-time · Posted Oct 21, 2026
- Location
- San Francisco, CA
New York, NY
Austin, TX
U.S. Remote
Seattle, WA
About the job
Secures Fluidstack’s operational technology (OT) systems across its data center fleet, from architecture and deployment through detection and incident response.
What you'll do
- Threat-model OT environments and design network segmentation, remote access, and IT/OT boundaries.
- Work with controls and site teams to secure operational deployments and advise on security design and reviews.
- Improve OT detection and incident response, and lead hardware OEM security engagements addressing supply-chain risks.
What they ask for
- Production security experience with substations, SCADA, or controls systems, including PLCs, relays, and industrial protocols.
- Experience threat-modeling OT environments and implementing practical segmentation and controls.
- Hands-on experience with OT security tools such as Claroty, Nozomi, Dragos, or similar.
- Knowledge of BMS, EPMS, and cooling systems.
Nice to have
- Depth in NERC CIP or IEC 62443.
- Experience securing virtualized or containerized industrial controls, or commissioning-phase security at construction sites.
Pay
$275K – $344K (USD, base salary or total pay not stated)
Tools
SCADA, BMS, EPMS, PLCs, Ignition, Claroty, Nozomi, Dragos
AI focus
Secures OT infrastructure supporting AI compute and protects the systems and environments used to operate it.
Model-written summary · the original posting is authoritative