Network Security Engineer for Frontier AI Compute

Fluidstack; Austin (TX); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Fluidstack in Austin, TX seeks an experienced network security engineer to defend compute infrastructure at scale. You will design and operate security for data centers, corp, and cloud, with emphasis on segmentation, firewalls, and east-west controls.

You will build network detection, telemetry, and alerting across training fabrics, OT networks, and WAN; harden OT interfaces, and automate controls so new sites ship with the right protections from day one.

Qualifications

• You've secured production networks at scale.
• 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.

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

Network security

Firewall design

NDR / flow detection

Infrastructure as code

Collaboration

Tools

Zeek

Suricata

BGP

Job description

Fluidstack in Austin, TX seeks an experienced network security engineer to defend compute infrastructure at scale. You will design and operate security for data centers, corp, and cloud, with emphasis on segmentation, firewalls, and east-west controls.

You will build network detection, telemetry, and alerting across training fabrics, OT networks, and WAN; harden OT interfaces, and automate controls so new sites ship with the right protections from day one.