Staff Infrastructure Engineer, Cluster Infrastructure

• Join the Cluster Infra team, which owns the full lifecycle of compute clusters at Anthropic across all major cloud providers and its own datacentres. • Build agent-driven automation for cluster provisioning and lifecycle management at a moment when the scale of compute is growing faster than at almost any company in the world. • Set the technical direction for how Anthropic brings compute online, ensuring clusters are interconnected with high bandwidth, secure by default, and able to automatically drain and recover in response to failure. • Work on infrastructure that determines how quickly new models are trained, how reliably safety experiments run, and how effectively Claude scales to millions of users.

• Have deep expertise in distributed systems, reliability, and cloud platforms such as Kubernetes, IaC, and AWS/GCP/Azure. • Be strongly proficient in at least one systems language such as Rust, Go, or Python, with IaC proficiency in Terraform. • Have 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). • Have depth in Kubernetes internals, cluster provisioning and management systems, or cluster orchestration systems such as Mesos or Borg-like platforms. • Have experience with cloud networking including VPC design and peering, Shared VPC/Transit Gateway, Cloud Interconnect/Direct Connect, Cloud NAT, cross-cloud private connectivity, BGP and route control, and edge load balancing and DDoS mitigation. • Have experience with cluster and host networking including CNI (Cilium), eBPF, NetworkPolicy, multi-NIC, sFlow, and service mesh technologies such as Istio, Envoy, or Linkerd with mTLS. • Have experience with cluster security including pod security standards and admission control, RBAC and least-privilege IAM, node and container hardening, and supply-chain/image provenance. • Have deep experience with infrastructure-as-code tools such as Terraform and Atlantis, and workflow orchestration tools such as Temporal or Argo Workflows. • Be skilled at quickly understanding systems design tradeoffs and keeping track of rapidly evolving software systems.

• Own the technical strategy and roadmap for agent-driven cluster lifecycle management covering 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 including incident response, postmortem culture, and on-call health. • Support the growth of engineers around you through technical mentorship and coaching.

• Receive an annual salary of £325k–£485k GBP. • Work from the London office with a hybrid policy requiring at least 25% office time. • Receive visa sponsorship with every reasonable effort made and an immigration lawyer retained to help. • Receive competitive compensation and benefits with optional equity donation matching. • Receive generous vacation and parental leave. • Enjoy flexible working hours.

Anthropic's mission is to create reliable, interpretable, and steerable AI systems that are safe and beneficial for users and society. The company 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 headquartered in San Francisco with offices in London.