業務内容

• Lead the operation and evolution of production-grade Kubernetes clusters across cloud environments, making architectural decisions on upgrades, scaling, disaster recovery, and reliability improvements.
• Define and drive GitOps strategy and standards across the organization, owning ArgoCD-based workflows (Application Sets, sync policies, deployment standards) and mentoring teams on GitOps best practices.
• Architect and establish Terraform-based infrastructure-as-code standards, building reusable modules, managing state, and implementing drift detection for safe provisioning.
• Lead platform observability strategy and incident response processes, standardizing monitoring and post-incident reviews to improve availability, performance, and resilience.
• Partner with and mentor application teams to onboard services onto the platform, creating documentation, runbooks, and self-service tooling to scale and boost developer productivity.
• Design and implement security control standards (RBAC, network policies, secrets management via Vault/Sealed Secrets/External Secrets Operator) to meet compliance and scale.
• Drive integration of platform capabilities with CI pipelines (GitHub Actions, GitLab CI, Tekton) to establish end-to-end delivery workflows and standards.

技術スタック

必須スキル

• Production Kubernetes clusters operations across cloud environments (e.g., EKS, GKE, AKS).
• GitOps-based CD workflows with ArgoCD, Flux, or similar; establishing deployment standards across environments.
• Infrastructure as Code (Terraform or equivalent), including reusable modules, state management, and drift detection.
• Automation scripting (Python, Bash, or Go) and coaching others on best practices.
• Networking fundamentals (DNS, load balancing, ingress) and platform patterns (service mesh) for reliable architectures.
• Strong written/verbal communication, mentoring, documentation, and runbook creation.

歓迎スキル（該当する場合）

• Practical secret management experience with Vault, Sealed Secrets, or External Secrets Operator.
• Experience extending GitOps with advanced ArgoCD features or similar tooling; multi-cloud/multi-cluster exposure.
• Observability/monitoring tooling and incident response practices (SRE-minded) across large platforms.
• CI/CD ecosystem integration experience beyond basics (e.g., advanced pipelines with GitHub Actions, GitLab CI, Tekton).

キャリア成長観点

• 大規模なKubernetesプラットフォームの設計・運用を通じ、SRE/DevSecOps領域の深い専門性と全社的影響力を獲得できる。
• 複数チームを横断する指導・メンター経験と、アーキテクチャ決定への影響力を通じたリーダーシップ能力の強化。
• IaC・GitOps・セキュリティ・観測性を横断して磨ける機会があり、Staff/Principalレベルなど上位ポジションへの道が開かれる。