About the RoleLocation: UK (occasional office travel) | Employment Type: Full-time, Permanent | Reports to: Engineering ManagerWe’re looking for a Senior Infrastructure Engineer in our Platform team to drive the architecture, design, and implementation of our next-generation AI-native cloud platform. You will implement scalable, resilient infrastructure and the self-service tooling that sits on top of it, working within an agreed architectural direction and contributing to how that direction evolves. You will combine strong hands-on engineering with clear communication, enabling teams to run HPC and AI/ML workloads reliably at scale.What You'll DoInfrastructure Design & Virtualisation:Implement and operate virtualisation solutions optimised for AI-native workloads, including hypervisor tuning for HPC environments.Build platform capabilities that scale with customer demand for compute, storage and networking.Bare-Metal and Operating System Management:Deliver provisioning, orchestration and lifecycle management of bare-metal hardware.Maintain strong Unix/Linux expertise, producing secure and performant configurations at scale.Networking and High-Performance Storage:Implement high-performance, cloud-native storage and networking for demanding workloads.Apply solid working knowledge of networking protocols (TCP, UDP, DNS, encryption) and software-defined networking.Kubernetes and Cloud-Native Platforms:Deploy and manage Kubernetes clusters across hybrid and multi-cloud environments, leveraging CNIs and service meshes.Build and maintain CI/CD pipelines that automate infrastructure delivery.Security and Audit:Kubernetes security hardening (RBAC, PSA/PSP successors, network policies, admission controllers - OPA/Gatekeeper, Kyverino)Secrets management and rotation across clusters (Vault/OpenBao, sealed-secrets, external-secrets patterns)Supply chain security — image scanning, signed artifacts (cosign/sigstore), provenance attestationApply least-privilege IAM patterns ac