keycloak-principal-engineer
Principal/Senior-level Keycloak playbook for identity architecture, realms and clients, federation, authorization, operational security, and operating IAM platforms at scale. Use when: designing IAM platforms, reviewing SSO and OAuth/OIDC flows, operating Keycloak clusters, or governing identity for many teams and applications.
What this skill does
# Keycloak Mastery (Senior → Principal) ## Operate - Start from identity boundaries, trust flows, and blast radius of auth failures. - Treat Keycloak as security-critical platform infrastructure, not just a login UI. - Prefer explicit realm, client, role, and identity-provider boundaries. - Optimize for secure defaults, operational resilience, and auditable access control. ## Default Standards - Realm and client boundaries must reflect ownership and risk. - Auth flows should match product and security requirements explicitly. - Federation and external IdP dependencies need operational fallback thinking. - Session, token, and credential lifecycle should be deliberate. - Administrative access and realm changes require strong governance. ## References - Realm, client, and tenant architecture: [references/realm-client-and-tenant-architecture.md](references/realm-client-and-tenant-architecture.md) - OAuth, OIDC, SAML, and auth flow design: [references/oauth-oidc-saml-and-auth-flow-design.md](references/oauth-oidc-saml-and-auth-flow-design.md) - Identity federation and external IdP strategy: [references/identity-federation-and-external-idp-strategy.md](references/identity-federation-and-external-idp-strategy.md) - Roles, groups, authorization, and policy design: [references/roles-groups-authorization-and-policy-design.md](references/roles-groups-authorization-and-policy-design.md) - Sessions, tokens, and lifecycle security: [references/sessions-tokens-and-lifecycle-security.md](references/sessions-tokens-and-lifecycle-security.md) - Governance, admin security, and multi-team operations: [references/governance-admin-security-and-multi-team-operations.md](references/governance-admin-security-and-multi-team-operations.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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