Senior Microsoft Cloud Infrastructure Engineer

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

We’re seeking a Senior Cloud Infrastructure Engineer to own the design, implementation, and lifecycle management of Crusoe’s enterprise cloud infrastructure across corporate and operational environments. This is a high-ownership, hands-on engineering role spanning Microsoft 365, Entra ID, Azure, and Azure Arc-enabled hybrid management. The role sits at the intersection of IT, Security, and site-specific operations to keep systems reliable, secure, and ready to scale with Crusoe’s rapidly expanding footprint of offices, warehouses, and data centers.

What You’ll Be Working On

- Administer and optimize Microsoft 365 services (Exchange Online, SharePoint Online, Teams, OneDrive) and own Entra ID tenant health, including Conditional Access, MFA enforcement, and directory synchronization

- Design and manage Azure infrastructure for corporate IT workloads (VMs, virtual networks, storage, and supporting PaaS services) with ongoing cost monitoring and rightsizing

- Implement and administer Azure Arc to unify governance, policy enforcement, and monitoring across hybrid on-premises and cloud environments

- Build and maintain infrastructure-as-code (Terraform, Bicep, or ARM) for repeatable, version-controlled, and auditable deployments

- Plan, rack, and commission physical server hardware at Crusoe data centers, CI facilities, and office sites during new builds and expansions

- Administer Windows Server environments including Active Directory, DNS/DHCP, Group Policy, and certificate services, and manage Hyper-V or VMware virtualized workloads

- Own monitoring, backup, disaster recovery, and incident response for all managed systems; participate in on-call rotation as the escalation owner for server, cloud, and identity incidents

- Drive automation across infrastructure operations, maintain architecture and runbook documentation, and provide mentorship to junior members of the IT Infrastructure team

What You’ll Bring to the Team

- 8+ years of hands-on infrastructure experience, with 5+ years focused on Microsoft Azure and M365 administration in enterprise environments

- Deep Microsoft 365 tenant administration, including Exchange Online, SharePoint Online, Teams, OneDrive, and Entra ID (Azure AD)

- Strong Azure infrastructure skills: VMs, VNets, NSGs, storage, ExpressRoute/VPN, and Identity and Access Management

- Hands-on Azure Arc experience for hybrid server management and policy enforcement

- Solid Windows Server administration: Active Directory, DNS/DHCP, Group Policy, certificate services, and file/print services

- Infrastructure-as-code proficiency (Terraform, Bicep, or ARM) with version-controlled practices; PowerShell or Azure CLI scripting for automation

- Ability to perform hands-on physical server work (racking, cabling, an …