PrincipalInfrastructureSecurityEngineer

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 This Role: As the Principal Infrastructure Security Engineer, you will serve as the visionary lead for securing Crusoe’s next-generation AI cloud infrastructure. This is a role for an industry-recognized security expert who has operated at hyperscale and understands how to systematically dismantle infrastructure risk. You are stepping in at a critical evolutionary phase: leading the architectural shift to a true zero-trust, identity-first fabric. In this position, you will bridge the gap between hardware roots-of-trust and the cloud control plane. You will tackle complex challenges across the entire stack, from hardware-level supply chain vulnerabilities and BMC hardening to securing public build environments and implementing cryptographically attested workload identities. You aren't just securing a cloud; y