Senior Software Engineer, Identity & Access Management
Crusoe · San Francisco, CA - US
About this role
## Senior Software Engineer — Identity & Access Management (IAM) Crusoe is on a mission to accelerate the abundance of energy and intelligence. As a vertically integrated AI infrastructure company, we build and operate every layer of the stack—from electrons to tokens—to power the world’s most ambitious AI workloads. ### About the Role Crusoe is building the world’s favorite AI-first cloud. The **Identity & Access Management (IAM)** team is the security bedrock our customers trust to run their most demanding AI and GPU workloads. IAM is on the **hot path for every request** in the cloud—authorizing millions of requests at **single-digit-millisecond latency**—so **reliability and performance are non-negotiable**. We’re seeking **Senior Software Engineers** to design, build, and scale IAM services, including: - Fine-grained authorization for Crusoe Cloud resources - Enterprise SSO and identity federation - Multi-tenant organization hierarchies - Identity for the agentic-AI era - Credential and secrets management As a Senior Engineer, you’ll own the end-to-end design and delivery of significant IAM services, partner across teams, and help raise the technical bar through mentorship and code review. ### What You’ll Be Working On - **Design and Deliver IAM Services**: Own end-to-end design, development, and operation of core IAM services (fine-grained authorization, authentication, identity federation, identity lifecycle). - **Solve Complex AuthN/AuthZ Problems**: Build platform-level solutions for complex authentication and authorization scenarios, including fine-grained access to Crusoe Cloud resources. - **Engineer for the Hot Path**: Deliver low-latency, fault-tolerant services that remain highly available under load. - **Harden Security Posture**: Apply security best practices such as OAuth2/OIDC, RBAC/ABAC, and session/credential management. - **Contribute to Architecture**: Support security, reliability, and maintainability through architectural decisions. - **Collaborate Across Teams**: Work with product, design, security, and SRE to evaluate tools/frameworks and ship customer-first solutions. - **Mentor and Elevate**: Mentor engineers, improve hiring/onboarding, perform code reviews, and help build an inclusive engineering culture. ### What You’ll Bring to the Team - **Education & Experience**: Bachelor’s degree in Computer Science or a related field...
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