Staff Infrastructure Security Engineer

Crusoe's mission is to accelerate the abundance of energy and intelligence. We’re crafting the engine that powers a world where people can create ambitiously with AI — without sacrificing scale, speed, or sustainability. Be a part of the AI revolution with sustainable technology at Crusoe. Here, you'll drive meaningful innovation, make a tangible impact, and join a team that’s setting the pace for responsible, transformative cloud infrastructure. We are seeking a highly skilled Staff Infrastructure Security Engineer to architect, deploy, and operationalize the foundational security services that will underpin our shift to a Zero Trust model. In this strategic role, you will define and establish the "roots of trust" for our organization, serving as a technical leader in Secrets Management and Identity architecture. While your immediate focus is to serve as the Subject Matter Expert (SME) driving our enterprise HashiCorp Vault platform from Proof-of-Concept (PoC) to global production readiness, your long-term scope is far broader. You will be responsible for evolving our credentials management strategy, onboarding engineering teams to secure self-service workflows, and designing scalable trust patterns across our hybrid multi-cloud environment. Key Responsibilities 1. Strategic Architecture & Governance • Zero Trust Architecture: Architect a highly available, disaster-resilient, and scalable multi-cluster secrets management platform that serves as the foundation for the organization’s Zero Trust strategy. • Technical Leadership: Drive consensus across Cloud Engineering, DevOps, and SRE teams to define standardized secret management workflows and integrate security patterns into the SDLC. • Compliance & Governance: Ensure the platform design meets rigorous internal policies and external compliance frameworks (e.g., SOX, ISO 27001). • Policy as Code: Design and implement advanced governance controls, including Sentinel Policy as Code, to automate security guardrails and access decisions. 2. Platform Engineering & Implementation • Infrastructure as Code (IaC): Lead the engineering of the Vault infrastructure using Terraform, ensuring all deployments are reproducible, version-controlled, and automated. • Identity Integration: Architect the integration between the secrets platform, Identity Providers (Okta), and workload identities (Kubernetes Service Accounts) to establish robust machine-to-machine authentication. • Advanced Secrets Capabilities: Configure and tune essential secrets engines (KV, Transit, KMIP) and Enterprise features (Performance Replication, Seal automation) to support diverse engineering use cases. 3. Operational Excellence & Developer Enablement • Vault as a Service (VaaS): Operationalize the platform by building self-service mechanisms, distinct "paved road" onboarding procedures, and documentation that allows engineering teams to easily consume security services. • Observability: Implement comprehensive monitoring, alerting, and audit logging to ensure platform health, provide visibility into usage patterns, and satisfy audit requirements. • Lifecycle Management: Own the full operational lifecycle of the production environment, including patching, version upgrades, backup/restore procedures, and incident response runbooks. Required Qualifications • 6+ years (or equivalent) hands-on experience in cloud security, DevOps, or infrastructure engineering. • Deep expertise and proven track record deploying and managing HashiCorp Vault in an enterprise environment (experience with the Enterprise edition is highly preferred). • Expert-level knowledge of Secrets Management, X.509 PKI (Public Key Infrastructure), Certificate Authority Operations, and Cryptography concepts. • Strong experience with Google Cloud Platform (GCP) and cloud native identity and access management (IAM). • Proficiency with Infrastructure as Code (IaC) tools, especially Terraform, for automating the deployment and configuration of Vault and its dependent infrastructure. Technical Skills • Fluent in at least one programming language (ideally Go or Python). • Demonstrable experience with Kubernetes and container security principles, especially integrating secrets into microservices architectures. • Strong understanding of network security concepts (IP addressing, IP routing, firewalls, segmentation, Zero Trust). Benefits: • Industry competitive pay • Restricted Stock Units in a fast growing, well-funded technology company • Health insurance package options that include HDHP and PPO, vision, and dental for you and your dependents • Employer contributions to HSA accounts • Paid Parental Leave • Paid life insurance, short-term and long-term disability • Teladoc • 401(k) with a 100% match up to 4% of salary • Generous paid time off and holiday schedule • Cell phone reimbursement • Tuition reimbursement • Subscription to the Calm app • MetLife Legal • Company paid commuter benefit; $300 per month Crusoe is an Equal Opportunity Employer. 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