Senior Network Engineer | AI Infrastructure |

Outside IR35

6 month contract

Based London

Help build the ultra-fast network backbone behind next-generation AI.

As a Senior Network Engineer, you’ll architect, deploy, and operate high-throughput, low-latency fabrics that power GPU clusters used for cutting-edge AI training and inference. This is a hands-on role where performance is key.

You’ll work on:

• Designing L3 leaf-spine networks using Mellanox (Cumulus Linux)
• Integrating Juniper PTX core routers & SRX firewalls
• Automating with Ansible, Python, and working deep in the Linux CLI
• Monitoring with SNMP, sFlow, gRPC, and tackling 24/7 incident response
• Supporting modern workloads: AI, HPC, hybrid cloud, and data center interconnects

We’re looking for:

• 3–5+ years in high-performance or AI-focused networking
• Deep experience with BGP, EVPN, VXLAN, MPLS
• Strong hands-on knowledge of Mellanox, Juniper, Cumulus OS, and automation tools

Bonus if you hold a JNCIE/CCIE, or have cloud networking and security chops.

If that sounds like you please connect.