Network Lead

Arcus Search; Greater London; On-site; GBP 85,000 - 120,000; Full time

Job summary

Arcus Search is sourcing a Network Team Lead in London for a leading quantitative technology firm. The role blends hands-on networking with SRE, automation and observability to support large-scale research and compute environments.

You'll work close to engineering, shaping infrastructure, automation, and monitoring. This position offers genuine technical ownership rather than purely managerial duties and is ideal for someone who thrives on solving complex network challenges in a fast-moving,

Qualifications

• Hands-on network leadership across a global, research-focused environment.
• Deep experience with data centre and WAN networking.
• Strong automation and observability capabilities using modern tooling.

Responsibilities

• Lead a highly technical network function and drive infrastructure evolution.
• Collaborate with engineering to advance automation and observability.
• Provide technical ownership beyond management focus.

Skills

Network Leadership

SRE Principles

Automation

Observability

Stakeholder Collaboration

Tools

Cisco

Arista

BGP/OSPF/EVPN/VXLAN/MPLS

Python

Ansible

Infrastructure as Code

Prometheus

Grafana

OpenTelemetry

Job description

Network Team Lead - London - Quantitative Technology - High-Performance Infrastructure

I’m working with a leading quantitative technology firm looking for a Network Team Lead to provide technical leadership across a highly sophisticated global network environment.

This is a hands-on role for someone who can combine deep networking expertise with genuine SRE, automation and observability experience.

• Cisco / Arista
• BGP / OSPF / EVPN / VXLAN / MPLS
• Python / Ansible / Infrastructure as Code
• Prometheus / Grafana / OpenTelemetry
• Datacentre & WAN Networking
• SRE / Reliability / Automation

You’ll lead a highly technical network function while remaining close to the engineering, helping evolve the infrastructure, automation and observability supporting large-scale research and compute environments.

A particularly interesting opportunity for someone who wants genuine technical ownership rather than a purely managerial position.