Senior Network Engineer

📋 Description Design scalable leaf-spine networks with Mellanox, Cumulus Linux, Juniper. Operate and troubleshoot Juniper and NVIDIA/Cumulus devices in production. Implement programmable SDN designs to enable automation and scalability. Kubernetes networking with CNIs (Calico, Cilium, Kube-OVN). Develop Ansible and Python automation for configuration, provisioning, and compliance. Observability with SNMP, sFlow, and gRPC to detect bottlenecks. 🎯 Requirements 3–5 years in HPC/AI networking for GPU-based or HPC clusters. 8–12+ years in networking, with 5+ years in globally distributed environments. Experience with multi-region backbone networks, transit/peering, high-availability Internet design. Hands-on with large-scale routing (BGP/MPLS) and SDN or orchestration. BGP, EVPN, VXLAN, and Data Centre Interconnect (DCI) knowledge. Kubernetes networking and CNIs (Calico, Cilium). 🎁 Benefits 25 days of annual leave. A culture that emphasises results over hierarchy, process and ego. Open communication and regular feedback. Learning Time to focus on new skills and projects. Health & Wellbeing: private medical insurance via Bupa. Cycle to Work Scheme.