Security Engineer, Network

Fluidstack is building large-scale compute infrastructure for artificial intelligence. The Security Engineer, Network will design and defend network security architecture across data centers, corporate environments, and cloud, build network detection capabilities, harden operational technology and building management systems, and automate security controls for new sites.

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

Requirements:

• You've secured production networks at scale, and 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