# Network Security Engineer

**Company:** [Fluidstack](https://hotfix.jobs/companies/fluidstack)
**Location:** Austin, TX, New York, NY, San Francisco, CA, Seattle, WA
**Role:** Security Engineering
**Salary:** $242k – $284k/yr
**Experience:** 7+ years
**Skills:** network security, firewalls, network segmentation, ndr, flow analysis, packet capture, Infrastructure As Code, ot security, ics security, BGP, zeek, suricata
**Posted:** 2026-07-17

> Design and defend network security architecture for AI compute infrastructure at gigawatt scale across data centers, OT networks, and cloud. Build detection, harden OT/BMS systems, and automate controls using IaC. Requires scaling network security experience, packet analysis, IT/OT segmentation, and real intrusion detection.

## Job Description

## Role Scope
- 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
- Secured production networks at scale, and you read a packet capture as comfortably as a dashboard.
- Designed segmentation for environments that mix IT, OT, and high-value compute.
- Deployed and tuned NDR or flow-based detection that found real intrusions.
- Work infrastructure-as-code: your firewall rules live in a repo, not a GUI.
- Partnered with network engineering without becoming the department of no.

## Nice-to-Haves
- OT and ICS security.
- Data center or cloud provider environments.
- BGP and routing security.
- Zeek or Suricata.

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**Apply:** https://hotfix.jobs/jobs/bd59c356-655c-454a-a824-e311bf965d91
**Canonical:** https://hotfix.jobs/jobs/bd59c356-655c-454a-a824-e311bf965d91