Staff Corporate Security Engineer

Crusoe•San Francisco, CA

About The Position

Crusoe is on a mission to accelerate the abundance of energy and intelligence, building the world’s favorite AI-first cloud infrastructure. As a vertically integrated AI infrastructure company, Crusoe owns and operates each layer of the stack — from electrons to tokens — to power the world's most ambitious AI workloads. The company is solving the boundless demand for AI compute and power bottlenecks with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI. Crusoe is seeking a Staff Corporate Security Engineer to act as the principal architect for its corporate security posture. In this role, you will move beyond tactical tool management to design high-assurance, preventative systems that safeguard the identity perimeter, global network, and SaaS ecosystem. As a senior technical leader, you will build a “Secure by Default” environment where security is seamlessly embedded into the employee experience.

Requirements

8+ years of experience designing and implementing Zero Trust, SASE, and modern identity-based security architectures
Strong expertise in SaaS security, including CASB, DLP, and governance across platforms like Google Workspace, Okta, and Slack
Experience implementing device trust, endpoint security, and hardware-backed identity solutions
Strong understanding of identity and access management systems (SSO, SAML 2.0, OAuth, SCIM) and secure access patterns
Knowledge of email security, phishing mitigation, and session security controls
Experience identifying and mitigating application-layer vulnerabilities such as IDOR and privilege escalation risks
Familiarity with emerging AI security challenges, including governance of agent-based systems and secure orchestration patterns
Strong architectural mindset with the ability to design preventative, scalable security systems
Excellent communication skills and ability to influence security decisions across engineering and business teams

Nice To Haves

Experience implementing CASB platforms and enterprise DLP solutions at scale
Familiarity with Model Context Protocol (MCP) or similar AI orchestration frameworks
Experience building “Secure by Default” environments in high-growth organizations
Background in cloud-native or AI infrastructure environment.

Responsibilities

Leading the design and implementation of Zero Trust Network Access (ZTNA) and Secure Access Service Edge (SASE) architectures, replacing legacy VPNs with identity-aware, perimeter-less access models
Architecting preventative SaaS security across platforms such as Google Workspace, Slack, and Okta, including CASB controls to enforce data protection and monitor unauthorized applications or extensions
Implementing Binary Authorization and device trust mechanisms, leveraging hardware-backed identity (e.g., TPM, Secure Enclave) to ensure only compliant devices can access corporate systems
Designing and tuning Data Loss Prevention (DLP) controls across endpoints and SaaS platforms to protect intellectual property
Strengthening email security posture, including MFA enforcement and session controls to mitigate phishing and session hijacking risks
Architecting AI-native security frameworks, including governance and secure gateways for agent-based systems (e.g., MCP), ensuring all AI-driven actions are auditable and aligned with zero-trust principles
Scaling identity and access management systems, including SSO, SAML, OAuth, SCIM, and designing Just-In-Time (JIT) access workflows to eliminate standing privileges
Defining and executing a “Crown Jewels” security methodology, identifying and remediating high-risk vulnerabilities (e.g., IDOR, role-bypass) across critical systems