Director, Infrastructure Security

About this role

Crusoe is on a mission to accelerate the abundance of energy and intelligence. As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each layer of the stack — from electrons to tokens — to power the world's most ambitious AI workloads. When you join Crusoe, you join a team that is building the future, faster.

We're in the midst of the greatest industrial revolution of our time. The demand for AI compute is boundless, and power is a bottleneck. We're solving that — with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI.

We're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved — people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services.

If you want to do the most meaningful work of your career, help our customers and partners advance their AI strategies, and be part of a high-performing team that believes in each other, come build with us at Crusoe.

About the Role:

As a GPU-cloud provider, Crusoe’s infrastructure is our product. Infrastructure Security

Engineering is arguably the most critical domain in our security engineering

organization.

Unlike traditional enterprise cloud security functions that act as passive auditors asking other

teams to fix bugs, this is an elite engineering and software development organization. You

will lead a dedicated team of 5–6 infrastructure security engineers who design, build, and

operate foundational security layers across our hyper-scale fleet.

This role offers a high-impact organizational leadership opportunity: inheriting an established

team of talented engineers, sharpening technical focus, resolving execution friction, and

instilling a high-velocity software delivery culture to turn this core group into an elite, world-class

engineering unit.

Reporting directly to the Senior Director of Security Engineering, you will own two core

pillars: Platform Security Engineering and Infrastructure Security Access and Posture

Management.

A Note From the Hiring Manager

"Infrastructure Security Engineering at Crusoe is an active software engineering

discipline, not a pure ‘cloud security’ function. We don't throw tickets over the fence

- we build the foundational cryptographic, identity, access, and runtime layers that

make our GPU-cloud VM and baremetal offerings secure by default.

I come from a deep product and infrastructure security background, and I hold

strong, battle-tested opinions on how infrastructure security should be engineered and operated. I am looking for a Director who can dive into the technical details,

establish clear architectural direction, and transform an existing team into a

high-performance engineering engine. Once aligned, you will have my full support,

dedicated headcount, and total executive backing to build and scale one of the

premier infrastructure security teams in the AI industry."

What You'll Be Working On:

1. Team Leadership, Turnaround & Talent Elevation

Organizational Transformation: Inherit, lead, and mentor an existing team of 5–6

infrastructure security engineers. Diagnose execution bottlenecks, resolve cultural

alignment issues, and elevate the team into a high-throughput engineering org.

Engineering Rigor & Velocity: Transition the team from reactive operational task

handling to a proactive platform engineering model with clear shipping cadences, code

quality standards, and architectural roadmaps.

Strategic Growth & Hiring: Establish clear accountability, strategically hire additional

junior talent to complement existing strengths, systems security, and automation

2. Platform Core Security Services (Foundational Engineering)

Identity, Secrets & PKI: Build, operate, and scale core identity and crypto primitives,

including workload identity (SPIFFE/SPIRE), enterprise secrets-as-a-service (HashiCorp

Vault), and public key infrastructure (PKI) across multi-tenant GPU environments.

Fleet Telemetry & eBPF: Deploy and manage eBPF-based security sensors at scale

across bare-metal and virtualized fleets to deliver high-fidelity observability and

kernel-level runtime protection.

Fleet Access & Just-In-Time (JIT): Architect and enforce zero-trust, JIT access

mechanisms for engineers and operators accessing fleet nodes, hypervisors, and core

switches.

Firmware & Supply Chain Security: Build mechanisms for secure boot, hardware roots

of trust, firmware update delivery, and software supply chain verification across GPU

nodes, CPUs, and network fabrics.

Infrastructure Vulnerability Management: Build platforms to continuously track,

prioritize, and remediate vulnerability states across millions of bare-metal, containerized,

and hypervisor assets.

3. Infrastructure Security Posture & IAM (Architecture & De-risking)

Control Plane & Cloud Security: Secure Crusoe’s multi-layer control plane across

public cloud environments (GCP) and multi-gigawatt on-premise AI data center

infrastructure.

IAM & Elimination of Standing Secrets: Eliminate standing admin privileges and

long-lived secrets. Architect least-privilege RBAC/ABAC models across cloud projects

and physical infrastructure.

Architectural Isolation & Risk Reduction: Identify and eliminate systemic architectural

risks (e.g., decoupling co-mingled Terraform execution environments, isolating tenant

control planes, and establishing hard boundary enforcement across GCP projects and

GPU clusters).

Security Architecture & Governance-by-Code: Perform continuous security architecture reviews, enforcing change management, isolation, and baseline posture natively through IaC (Terraform, OpenTofu, Kubernetes operators).

What You'll Bring to the Team:

Platform & Security Engineering Leadership: 8+ y

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