Network Security Engineer for Frontier AI Compute

Fluidstack; United States; Remote; USD 150,000 - 230,000; Full time

Job summary

Fluidstack seeks a Security Engineer to defend our frontier compute infrastructure across data centers, corporates networks, and cloud environments. You will design and implement scalable network defenses at gigawatt scale.

You will deploy NDR/flow-based detections, code firewall rules as infrastructure-as-code, and collaborate with network engineers to move fast without compromising security. You’ll protect critical AI assets with ownership and high tempo.

Qualifications

• Experience securing production networks at scale.
• Ability to read and interpret packet captures confidently.
• Designed segmentation for IT/OT/high-value compute environments.
• Deployed and tuned NDR or flow-based detection to identify real intrusions.
• Practices infrastructure-as-code; firewall rules kept in repos.
• Collaborates with network engineering without being the department of no.
• Bonus: OT/ICS security, data center or cloud provider environments, BGP or routing security.

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.

Skills

Production networks secured at scale

Packet capture reading

Network segmentation design

NDR/flow-based detection deployment

Infrastructure-as-code firewall rules

Collaboration with network engineering

OT/ICS security (bonus)

Job description

Fluidstack seeks a Security Engineer to defend our frontier compute infrastructure across data centers, corporates networks, and cloud environments. You will design and implement scalable network defenses at gigawatt scale.

You will deploy NDR/flow-based detections, code firewall rules as infrastructure-as-code, and collaborate with network engineers to move fast without compromising security. You’ll protect critical AI assets with ownership and high tempo.