Frontier Network Security Engineer - AI Compute

Fluidstack; New York (NY); On-site; USD 242,000 - 284,000; Full time

Job summary

Fluidstack is seeking a Security Engineer to design and defend network security across data centers, corp, and cloud. The role requires building detection, automating controls, and hardening OT/IT interfaces while enabling scalable, end-to-end security for frontier compute infrastructure.

You will work in a high-intensity environment, apply best practices, and collaborate with network teams to implement segmentation, monitoring, and rapid incident response.

Qualifications

• You secured production networks at scale.
• You read a packet capture as comfortably as a dashboard.
• 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.
• You work infrastructure-as-code: your firewall rules live in a repo, not a GUI.
• You've partnered with network engineering without becoming the department of no.
• Bonus: OT and ICs security. Data center or cloud provider environments. BGP and routing security. Zeek or Suricata.

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

Secured production networks

Packet capture analysis

Network segmentation design

NDR / flow-based detection

Infrastructure as code (firewall rules

Collaboration with network engineering

OT / IC security

BGP routing security

Zeek or Suricata

Job description

Fluidstack is seeking a Security Engineer to design and defend network security across data centers, corp, and cloud. The role requires building detection, automating controls, and hardening OT/IT interfaces while enabling scalable, end-to-end security for frontier compute infrastructure.

You will work in a high-intensity environment, apply best practices, and collaborate with network teams to implement segmentation, monitoring, and rapid incident response.