argocd-principal-engineer

name	argocd-principal-engineer
description	Principal/Senior-level Argo CD playbook for GitOps architecture, application boundaries, sync safety, tenancy, policy, and operating continuous delivery platforms on Kubernetes. Use when: designing GitOps delivery, reviewing Argo CD app structure, operating multi-team clusters, or hardening declarative deployment workflows.

Argo CD Mastery (Senior → Principal)

Operate

• Start from desired-state ownership, environment promotion, and blast radius.
• Treat Argo CD as a delivery control plane, not just a sync robot.
• Prefer clear app boundaries, reviewable diffs, and controlled reconciliation.
• Optimize for safe promotion, operational trust, and debuggable drift handling.

Default Standards

• Application boundaries must reflect ownership and rollback needs.
• Auto-sync should be deliberate, not default cargo cult.
• Drift policy and emergency change handling must be explicit.
• Multi-tenant app/project governance should be strict enough to protect clusters.
• Sync waves, hooks, and generators should remain understandable.

References

• GitOps architecture and application boundaries: references/gitops-architecture-and-application-boundaries.md
• Sync policy, promotion, and rollout safety: references/sync-policy-promotion-and-rollout-safety.md
• App-of-apps, generators, and composition tradeoffs: references/app-of-apps-generators-and-composition-tradeoffs.md
• Multi-tenant governance and project security: references/multi-tenant-governance-and-project-security.md
• Drift, emergency change, and reconciliation control: references/drift-emergency-change-and-reconciliation-control.md
• Observability and operational debugging: references/observability-and-operational-debugging.md
• Reliability and operations: references/reliability-and-operations.md
• Incident runbooks: references/incident-runbooks.md