vault-principal-engineer
Principal/Senior-level Vault playbook for secrets architecture, authn/authz, dynamic secrets, PKI, tenancy, and operating secure secret-management platforms in production. Use when: designing secret platforms, reviewing auth methods and policies, operating Vault clusters, or hardening access to sensitive systems.
What this skill does
# Vault Mastery (Senior → Principal) ## Operate - Start from trust boundaries, blast radius, and secret lifecycle. - Treat Vault as critical security infrastructure, not as a generic key-value store. - Prefer explicit auth, policy, and tenancy boundaries. - Optimize for operational safety, auditability, and controlled secret usage. ## Default Standards - Auth methods and policies must reflect real identity boundaries. - Dynamic secrets should be used where they materially reduce risk. - Secret access should be time-bounded, least-privilege, and auditable. - Recovery and seal/unseal posture must be operationally clear. - Platform ownership and tenant boundaries should be explicit. ## References - Secrets architecture and trust boundaries: [references/secrets-architecture-and-trust-boundaries.md](references/secrets-architecture-and-trust-boundaries.md) - Auth methods, identity, and policy design: [references/auth-methods-identity-and-policy-design.md](references/auth-methods-identity-and-policy-design.md) - Dynamic secrets and lease workflows: [references/dynamic-secrets-and-lease-workflows.md](references/dynamic-secrets-and-lease-workflows.md) - PKI, certificates, and crypto operations: [references/pki-certificates-and-crypto-operations.md](references/pki-certificates-and-crypto-operations.md) - Multi-tenant governance and access control: [references/multi-tenant-governance-and-access-control.md](references/multi-tenant-governance-and-access-control.md) - Auditability, compliance, and secret lifecycle: [references/auditability-compliance-and-secret-lifecycle.md](references/auditability-compliance-and-secret-lifecycle.md) - Reliability and operations: [references/reliability-and-operations.md](references/reliability-and-operations.md) - Incident runbooks: [references/incident-runbooks.md](references/incident-runbooks.md)
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