Senior Cisco ACI Network Specialist (SC Cleared) Location: London (Hybrid - 1-2 days onsite) Contract: 6 months Rate: £700 Inside IR35 We're looking for an SC Cleared Senior Cisco ACI Network Specialist to join a major enterprise datacentre transformation programme within a highly regulated environment. This is a hands-on, ACI-first role focused on upgrading, modernising, and standardising large-scale Cisco ACI and Nexus fabric environments. You'll be working across multiple enterprise datacentre fabrics, delivering upgrades, platform refreshes, and fabric modernisation as part of a long-term, Cisco-led strategy. What You'll Be Doing Delivering Cisco ACI fabric upgrades across multiple enterprise environments Supporting the modernisation of ACI orchestration and management platforms Leading APIC platform refresh and ACI platform upgrades Working on Nexus fabric and ACI control-plane modernisation Designing and maintaining ACI policy models (tenants, VRFs, BDs, EPGs, contracts, L4-L7) Contributing to underlay/overlay fabric design (EVPN/VXLAN, IS-IS/BGP) Producing design documents, upgrade plans, and implementation runbooks Leading and supporting high-...