Senior Security Engineer (Enterprise Security)

Join CoreWeave, a rapidly growing cloud-native infrastructure provider. As a Senior Security Engineer, you will be responsible for designing and implementing security controls that protect our workforce and enterprise stack. You will lead initiatives across identity, access management, device and endpoint security, and SaaS security, partnering closely with various teams. Your work will blend hands-on engineering with architecture and program ownership, and you will have a direct impact on the security posture of the company.

• Design and implement security controls for workforce identity solutions, including SSO, MFA, and lifecycle automation.
• Lead initiatives across identity, access management, device and endpoint security, and SaaS security, partnering closely with IT Engineering and other security teams.
• Turn high-level objectives into concrete designs, automation, and measurable risk reduction, including implementing zero trust for workforce access.

• If you’re excited about zero trust, phishing-resistant MFA, and building secure-by-default experiences that actually make people more productive, this is the team to join
• Demonstrated experience designing and rolling out MFA, ideally including phishing-resistant approaches (FIDO2/WebAuthn, hardware security keys, device-bound authenticators, step-up authentication)
• Exposure to SIEM/detection ecosystems (e.g., Elastic) and experience collaborating with detection & response teams on identity/endpoint/SaaS detections
• Deep familiarity with SAML, OAuth 2.0/OIDC, and SCIM, including real-world experience integrating these protocols with third-party SaaS and internal apps
• Strong, practical understanding of modern IAM concepts: SSO, federation, RBAC/ABAC, JIT access, least privilege, and separation of duties
• Experience designing and deploying zero trust or context-aware access controls (e.g., device trust, network segmentation, mTLS, ZTNA) in hybrid or remote-friendly environments
• Familiarity with MDM and endpoint security tooling (e.g., Jamf, Intune, EDR platforms) and how they tie into identity and access decisions
• A track record of owning cross-functional projects from design through adoption, with an emphasis on measurable risk reduction and user experience
• Proficiency in at least one modern scripting or programming language (e.g., Python, Go) used to build automations, integrations, or internal tooling
• Experience securing and integrating business-critical SaaS (e.g., Google Workspace, Microsoft 365, Slack, Atlassian, HRIS, ticketing) including SCIM provisioning, access reviews, and audit log ingestion
• 5+ years of experience in enterprise security, identity and access management, or closely related security engineering roles
• Hands-on experience implementing and operating SSO and workforce identity with platforms such as Okta, Entra ID, or equivalent IdPs
• Experience working in high-growth or hyperscale environments where security must keep pace with rapid headcount and tooling expansion
• Hands-on experience with zero trust network access or secure access products (e.g., ZTNA, secure web gateways, or identity-aware proxies)
• Experience with SaaS security posture management (SSPM), CASB, DLP, or insider risk tooling focused on collaboration platforms and data access
• Familiarity with enterprise security standards and frameworks (e.g., SOC 2, ISO 27001, NIST 800-53) and mapping enterprise controls to these requirements
• Experience building or contributing to internal security tooling (e.g., access review automation, JML workflows, policy-as-code)
• Participation in security communities, standards groups, or open-source contributions in IAM, zero trust, or enterprise security