Staff+ Infrastructure Engineer, Cluster Infrastructure

• Own the full lifecycle of compute clusters at Anthropic, building agent-driven automation for cluster provisioning and lifecycle management across all major cloud providers and Anthropic's own datacentres. • Set the technical direction for how Anthropic brings compute online at a moment when the scale of that compute is growing faster than at almost any company in the world. • Build systems that stand up clusters that are interconnected with high bandwidth, secure-by-default, and able to automatically drain and recover in response to failure. • Be based in London with a hybrid policy expecting at least 25% of time in the office.

• Have deep expertise in distributed systems, reliability, and cloud platforms (e.g. Kubernetes, IaC, AWS/GCP/Azure). • Be strongly proficient in at least one systems language (e.g. Rust, Go, or Python), with IaC proficiency in Terraform. • Demonstrate a track record of leading complex, multi-quarter technical initiatives spanning multiple teams or systems. • Build alignment across senior stakeholders and communicate effectively at all levels.

• Have 10+ years of software engineering experience, including time as a technical lead setting direction for a team. • Have experience operating large-scale compute infrastructure at hyperscale (100+ clusters, 10K+ nodes). • Bring depth in one or more of: Kubernetes internals, cluster provisioning and management systems, or cluster orchestration systems (Mesos, Borg-like). • Have 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. • Have experience with cluster and host networking: CNI (Cilium), eBPF, NetworkPolicy, multi-NIC, sFlow, service mesh (Istio/Envoy/Linkerd, mTLS). • Have experience with cluster security: pod security standards and admission control, RBAC and least-privilege IAM, node and container hardening, supply-chain/image provenance. • Bring deep experience with infrastructure-as-code (Terraform, Atlantis) and workflow orchestration (Temporal, Argo Workflows).

• 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.

• Receive competitive compensation between £325,000 and £485,000 GBP annually. • Get visa sponsorship where possible — Anthropic retains an immigration lawyer to support this. • Take generous parental leave. • Enjoy generous vacation and flexible working hours. • Optional equity donation matching. • Set the technical direction for compute at one of the fastest-scaling AI infrastructure footprints in the world.

Anthropic's mission is to create reliable, interpretable, and steerable AI systems. They want AI to be safe and beneficial for users and society as a whole. The team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. Anthropic is a public benefit corporation offering competitive compensation and benefits.