Security Engineer, Cloud

Fluidstack

$120K — $150K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 5-7 years of hands-on experience securing production cloud or bare-metal infrastructure.
  • Demonstrable success in shipping security tooling that is widely adopted by engineering teams.
  • Proficiency in identifying and remediating isolation or privilege-escalation vulnerabilities.
  • Ability to write production-quality code, treating security policies as software.
  • Experience in incident response for infrastructure you've built or managed.
  • Familiarity with Kubernetes, container security, hardware root of trust, and eBPF-based detection (bonus).

Responsibilities

  • Own and enhance security for both cloud and bare-metal control planes essential for customer training runs.
  • Develop and implement guardrails as code, ensuring security policies streamline engineering processes.
  • Engineer robust detection and response strategies across cloud infrastructures, addressing API abuse and compromised credentials.
  • Secure the multi-tenant boundaries, protecting customer workloads sharing infrastructure.
  • Build security measures from the ground up, creating an end-to-end security program as the organization scales.

Benefits

  • Opportunity to build and lead security programs from scratch, without legacy constraints.
  • Engage with high-stakes security challenges in AI, impacting technology development globally.
  • Collaborative environment valuing exceptional talent, allowing flexibility in candidate fit.
  • Work in a forward-thinking company prioritizing pay equity and transparency.
Full Job Description
The Security Team

Examples of key problems the team is working on
  • You're securing the frontier of AI. The model weights training on our infrastructure are the most valuable and most targeted artifacts in technology, and we're standing up the compute to hold them faster than anyone ever has. A breach isn't a leak, it's the frontier walking out the door.
  • Build the entire security program from scratch. Most leaders inherit someone else's system and spend a career patching it. Here you own it end to end, bare metal to boardroom, as we scale across continents.
  • Your threat surface is measured in gigawatts. The customers running on our infrastructure are building the most consequential technology in human history, and being responsible for the physical and logical security of that work makes everything else feel small.
Role Scope
  • Own security for the cloud and bare-metal control planes customers' training runs depend on: hardening, identity, and workload isolation.
  • Build guardrails as code: policies, scanning, and paved roads that make the secure path the fast path for engineers.
  • Engineer detection and response across cloud infrastructure, from API abuse to compromised credentials to tenant escape.
  • Secure the multi-tenant boundary where customer workloads, some of the most targeted in AI, share infrastructure.
What We're Looking For
  • The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would.
  • You've secured production cloud or bare-metal infrastructure hands-on, not just audited it.
  • You've shipped security tooling engineers actually adopted.
  • You've found and fixed real isolation or privilege-escalation issues.
  • You write production-quality code and treat policies as software.
  • You've run incident response on infrastructure you helped build.
  • Bonus: Kubernetes and container security. Hardware root of trust and measured boot. eBPF-based detection. GPU and HPC environments.


We are committed to pay equity and transparency.

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