Network Engineer, Security
Fluidstack · Austin, TX
About this role
**Network Engineer, Security — Fluidstack** **About Fluidstack** Fluidstack builds civilization-scale AI compute infrastructure—acquiring power, designing and operating data centers, and rethinking every layer of the stack to deliver 10 to 100s of GW faster than anyone else. **How we operate** - **Be a barrel:** Full autonomy. Own things end to end. - **Insane urgency:** Move fast and push forward. - **Reason from first principles:** Challenge assumptions; best idea wins. - **Love of the game:** High-intensity focus on frontier problems. - **Build something that matters:** Work that impacts human freedom. **Security Team (what you’ll help solve)** - **Secure the frontier of AI:** Protect the most valuable and targeted artifacts—training on our infrastructure. - **Build the security program from scratch:** Bare metal to boardroom, scaling across continents. - **Threat surface at gigawatt scale:** Physical + logical security for consequential workloads. **Role scope** - Design and defend **network security architecture** across data centers, corp, and cloud (segmentation, firewalls, east-west controls). - Build **network detection**: telemetry, flow analysis, and alerting across training fabrics, OT networks, and the WAN. - **Harden OT and BMS** environments where the network touches physical plant. - **Automate network security controls** so new sites inherit the architecture on day one. **What we’re looking for** - Secured **production networks at scale**; comfortable reading packet captures like dashboards. - Designed **segmentation** across mixed IT/OT/high-value compute. - Deployed and tuned **NDR or flow-based detection** that found real intrusions. - Uses **infrastructure-as-code** (firewall rules in a repo, not a GUI). - Partners with network engineering without becoming the “department of no.” **Bonus** - OT/ICS security - Data center or cloud provider environments - **BGP/routing security** - **Zeek or Suricata** **Apply** https://jobs.ashbyhq.com/fluidstack/05c2e69c-42f9-4fcb-9cf0-a467aaf98f1c **Equal Employment Opportunity** Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration without regard to protected characteristics under applicable law. **Privacy / Screening Notices** - Applicant Privacy Notice: https://fluidstack.io/legal/applicant-privacy-notice - AI Screening Notice: https://fluidstack.io/legal/ai-screening-notice - Ashby Bias Audit: https://fluidstack.io/legal/ashby-bias-audit
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