Senior Staff+ Infrastructure Engineer, Cluster Infrastructure at Anthropic

Hybrid - San Francisco, CA; New York City, NY; Seattle, WA

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Anthropic’s Infrastructure organization is foundational to our mission of developing AI systems that are reliable, interpretable, and steerable. Cluster Infra owns the full lifecycle of compute clusters at Anthropic, building agent-driven automation for cluster provisioning and lifecycle management across all major cloud providers and our own datacenters. As a Staff engineer on this team, you will set the technical direction for how Anthropic brings compute online at a time when the scale of that compute is growing rapidly.

Salary

USD 405,000 - 485,000

Requirements

Skills

  • Deep expertise in distributed systems, reliability, and cloud platforms (e.g., Kubernetes, IaC, AWS/GCP/Azure)
  • Strong proficiency in at least one systems language (e.g., Rust, Go, or Python), IaC proficiency with Terraform
  • Track record of leading complex, multi-quarter technical initiatives spanning multiple teams or systems
  • Ability to build alignment across senior stakeholders and communicate effectively at all levels
  • 12+ years of software engineering experience, including time as a technical lead setting direction for a team
  • Experience operating large-scale compute infrastructure at hyperscale (100+ clusters, 10K+ nodes)
  • Depth in one or more of: Kubernetes internals, cluster provisioning and management systems, cluster orchestration systems (Mesos, Borg-like)
  • Experience with cloud networking: VPC design and peering, Shared VPC/Transit Gateway, Cloud Interconnect/Direct Connect, Cloud NAT, cross-cloud private connectivity, BGP and route control, edge load balancing and DDoS mitigation (Cloud Armor / AWS Shield)
  • Experience with cluster and host networking: CNI (Cilium), eBPF, NetworkPolicy, multi-NIC, sFlow, service mesh (Istio/Envoy/Linkerd, mTLS)
  • Experience with cluster security: pod security standards and admission control, RBAC and least-privilege IAM, node and container hardening, supply-chain/image provenance
  • Deep experience with infrastructure-as-code (Terraform, Atlantis), workflow orchestration (Temporal, Argo Workflows)
  • Skill in quickly understanding systems design tradeoffs and keeping track of rapidly evolving software systems
  • Bachelor’s degree or an equivalent combination of education, training, and/or experience
  • English

Responsibilities

  • Own the technical strategy and roadmap for agent-driven cluster lifecycle management - provisioning, updates and decommissioning
  • Partner across teams to ensure new compute capacity is ingested on time
  • Align with partner teams on physical build-out and leverage cloud solutions to deliver high-bandwidth inter-cluster connectivity
  • Collaborate with security owners to ensure clusters are provisioned secure-by-default
  • Define and drive strategy on cluster scalability, homogeneity and fault tolerance
  • Work closely with cloud providers and internal research, inference and product teams to shape long-term compute, data, and infrastructure strategy
  • Establish and evolve operational-excellence practices: incident response, postmortem culture and on-call health
  • Support the growth of engineers around you through technical mentorship and coaching

Technologies

KubernetesIaCAWSGCPAzureRustGoPythonTerraformMesosBorg-likeVPCShared VPCTransit GatewayCloud InterconnectDirect ConnectCloud NATBGPedge load balancingCloud ArmorAWS ShieldCiliumeBPFNetworkPolicymulti-NICsFlowIstioEnvoyLinkerdmTLSKubernetes internalscluster provisioningcluster managementcluster orchestrationTerraformAtlantisTemporalArgo Workflows

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