Principal Incident Responder

Fluidstack•Austin, TX

6d•$330,000 - $380,000

About The Position

Fluidstack is building civilization-scale infrastructure for AI, focusing on delivering massive amounts of compute power faster than anyone else. We are looking for individuals who care deeply about this mission and operate with extreme ownership, velocity, and a first-principles approach. The Security Team is responsible for securing the frontier of AI, protecting the most valuable and targeted artifacts in technology – model weights training on our infrastructure. This role involves building the entire security program from scratch, from bare metal to the boardroom, across global operations. The threat surface is measured in gigawatts, and the responsibility lies in protecting the physical and logical security of work that is building the most consequential technology in human history.

Requirements

You've personally led major security incidents from first alert to resolution, making containment calls under pressure with the business watching.
You've built detection logic and response playbooks that caught real intrusions, not just theoretical ones.
You've run digital forensics across cloud, endpoint, and network evidence and reconstructed what an attacker actually did.
You've stood up or substantially rebuilt an incident response program rather than only operating inside someone else's.
You've hunted for threats proactively and found activity that existing tooling missed.
You write incident reports and postmortems clear enough that both engineers and executives act on them.

Nice To Haves

Experience defending high-value targets such as AI labs, financial infrastructure, or critical infrastructure against nation-state threat models.
Cloud-native forensics (AWS, GCP).
Detection engineering and SIEM or SOAR tooling.
Malware analysis or reverse engineering.

Responsibilities

Lead incident response end to end across corporate, cloud, and data center environments, from detection and containment through eradication and post-incident review.
Build the detection logic, response playbooks, and forensic tooling for an environment where the assets under threat are the most targeted model weights in technology.
Run investigations across a threat surface measured in gigawatts, correlating signals from cloud, endpoint, network, and physical systems into a single picture of an attack.
Stand up the incident response function from the ground up, defining severity models, on-call rotations, and the escalation path to leadership.
Turn each incident into a permanent improvement by partnering with the security and IT teams to close the gaps your investigations surface.