Senior Network andamp; Security Engineer (VCF/NSX-T/Automation) - Inside IR35 - London - Central (Hybrid)We''re looking for an experienced Senior Network andamp; Security Engineer to support the design, delivery, automation, and security hardening of a complex VMware Cloud Foundation (VCF)/NSX-T estate within a high-security environment.Role Details:Contract length: 6 months (rolling)Daily rate: £500-£600 per day (Inside IR35)IR35 status: Inside IR35Location: Hybrid - on-site in LondonStart date: ASAPClearance: SC Cleared required (DV preferred) - DV Eligible Key Responsibilities:Lead end-to-end NSX-T design within VCF environments (multi-site/multi-tenant)Own architecture across advanced SDN patterns including multi-Edge Cluster, multi-VRF, multiple NSX instances, and NSX FederationProduce clear, defensible HLDs/LLDs and supporting architecture documentationDeploy and configure NSX-T components: fabrics, Edge nodes, transport zones, T0/T1 gateways, VRFs, NAT, routingSupport migrations, policy transformations, upgrades, and best-practice implementationImplement security hardening and zero-trust controls, including: Distributed Firewall (DFW), Gateway Firewall, micro-segmentationHardening across SDDC Manager/vSphere/NSX-T, RBAC, certificate management, and loggingBuild automation using PowerShell and NSX-T Policy/Manager APIs (deployment, policy configuration, compliance checks, ops automation)Produce runbooks, troubleshooting guides, and BAU handover documentationSkills andam