Description
As a Senior Security Engineer, Enterprise Security, you will design and ship the security controls that underpin CoreWeave's workforce and enterprise stack. You will lead initiatives across identity, access management, device and endpoint security, and SaaS security,partnering closely with IT Engineering, Endpoint, Network, and other security teams.
Your day-to-day will blend hands-on engineering (writing code, building integrations, tuning controls) with architecture and program ownership (setting standards, defining patterns, and driving adoption across teams). You will be responsible for turning high-level objectives,like “implement zero trust for workforce access” or “deploy phishing-resistant MFA at scale”,into concrete designs, automation, and measurable risk reduction.
In this role, you will:
- Engineer modern identity and access controls
- Design, implement, and operate workforce identity solutions (e.g., Okta/Entra and other IdPs) including SSO, MFA, conditional access, and lifecycle automation via SCIM.
- Develop and roll out phishing-resistant MFA for high-value accounts and critical access paths (e.g., FIDO2/WebAuthn, hardware keys, device-bound authenticators).
- Define and maintain RBAC/IAM patterns for enterprise applications (role models, groups, entitlements, JIT access, and approvals).
- Implement zero trust for workforce and enterprise access
- Design and deploy controls that combine user identity, device posture, network context, and application sensitivity to enforce least-privilege access.
- Partner with Network and Infrastructure teams to integrate mTLS, service identity, and policy-based access into internal services and admin interfaces.
- Help transition from legacy perimeter models to zero trust network access (ZTNA) patterns for employees, contractors, and third parties.
- Secure SaaS and collaboration platforms
- Evaluate, onboard, and harden SaaS applications (Google Workspace, Microsoft 365, Slack, HRIS, ticketing, and other business apps) to align with enterprise security policies.
- Implement and tune controls such as SCIM provisioning, data access policies, DLP, sharing controls, and audit logging across the SaaS estate.
- Partner with business and IT owners to ensure new SaaS applications meet baseline security standards before adoption.
- Harden endpoints and the extended workforce
- Collaborate with Endpoint/IT teams to define and enforce baseline configurations for laptops, workstations, and other managed devices via MDM and EDR.
- Design secure patterns for contractor and vendor access, including device requirements, identity separation, and time-bound access.
- Support investigations and incident response related to identity, endpoint, and SaaS domains.
- Automate and instrument everything you can
- Build automation and self-service experiences for access requests, approvals, access reviews, and break-glass workflows.
- Develop integrations between IdPs, HRIS, ticketing, and other systems to minimize manual toil and reduce identity-related error rates.
- Define and instrument metrics for enterprise security (e.g., MFA coverage, zero trust policy enforcement, joiner/mover/leaver SLA adherence, SaaS posture).
- Partner on detection, response, and governance
- Work with Security Operations and SIEM teams to ensure robust visibility into identity, device, and SaaS activity, and to build high-signal detections.
- Contribute to policies, standards, and reference architectures that encode enterprise security expectations.
- Author clear documentation and runbooks that make it easy for teams to consume and operate the controls you build.