Senior Network Engineer Contract LondonWhat the successful Senior Network Engineer will be doing:Supporting a major office relocation and data centre migration for a global financial services group, working across Arista, Aruba and Cisco infrastructureDelivering Layer 2/3 network migration (switching, routing, VLANs, trunking, STP, LACP) alongside a new FX trading platform buildHandling hands-on physical infrastructure work - copper and fibre patching, cable routing, labelling, to a professional installation standardSupporting cutovers, implementation windows and post-change validation, including out-of-hours work when requiredOngoing support post go-liveThe Senior Network Engineer needs the following:Proven contractor experience delivering building moves and data centre migrations, ideally supporting a trading platform buildStrong hands-on experience with Arista, Aruba and Cisco kitSolid Layer 2/3 networking knowledge, including connectivity validation and troubleshootingTrack record working with third-party carriers on circuit/WAN migrationsComfortable in a fast-paced, business-critical, multi-site environmentDesirable skill for the network engineer:French language skillsExperience with multicast networking or Infinera/optical transportCCNA, CCNP, Arista ACE or equivalent certificationGuidant, Carbon60, Lorien and SRG - The Impellam Group Portfolio are acting as an Employment Business in relation to this vacancy. ..... full job details .....