Network Engineer (Datacentre, Arista, Cisco)

Datacentre Network Engineers are required by a leading network consultancy that specialises in datacentre transformation. Due to a significant period of growth, the firm is now looking to hire several Datacentre Network Engineers to design, build and run modern DC networks within financial markets environments.

The role/s would suit experienced DC Engineers looking to move to an organisation that will provide a broader, more client-focused remit or Engineers at the beginning of their DC career looking for a firm that will support their professional and technical development.

• Design, build and operate spine-leaf (Clos) datacentre fabrics based on Cisco and Arista technologies
• Deploy and run VXLAN/EVPN overlays, including multi-tenant VRF segmentation
• Manage the routed underlay (BGP, OSPF or IS-IS) with ECMP and fast failover
• Plan capacity, oversubscription ratios and scale-out of leaves and spines
• Deliver resilient server connectivity using MLAG/vPC and LACP
• Carry out upgrades and maintenance without service impact (traffic draining, staged rollouts)
• Troubleshoot complex issues across Layers 1-7 and lead root-cause analysis
• Build and maintain network automation (Python, Ansible, CI/CD pipelines)
• Implement monitoring and streaming telemetry
• Integrate firewalls, load balancers and security controls into the fabric
• Produce designs, runbooks and change documentation