Network Team Lead

Arcus Search; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Discretionary annual bonus

Job summary

Arcus Search supports a leading quantitative technology firm in London seeking a Network Team Lead to own the performance, reliability and operational maturity of its network environment. The role blends hands-on engineering with automation, observability and disciplined runbooks to drive excellence.

You will lead network operations across datacentre, WAN and campus, drive incident response and implement IaC using Python and Ansible to enhance monitoring and resilience.

Qualifications

• Strong hands-on network engineering experience in enterprise or large-scale environments.
• Experience across datacentre, WAN and campus networking.
• Excellent understanding of L2/L3 networking, BGP and EVPN-VXLAN.
• Experience with network security infrastructure including firewalls, load balancers and proxies.
• Experience with Python, Ansible or similar automation tooling.
• Understanding of Infrastructure as Code and CI/CD.
• Experience with network observability and monitoring.
• Strong incident management and troubleshooting capability.
• Previous experience leading engineers, projects or a technical function.

Responsibilities

• Lead the operational performance, stability and availability of the network environment.
• Provide technical leadership across network operations and incident response.
• Lead the investigation and resolution of critical network incidents.
• Drive automation using Python, Ansible and Infrastructure as Code.
• Improve network monitoring, telemetry, alerting and observability.
• Develop operational tooling, runbooks and incident response processes.
• Work closely with Network Security and Infrastructure Engineering teams.
• Support network architecture, upgrades, capacity planning and performance optimisation.
• Identify recurring issues and drive long-term technical improvements.

Skills

Network engineering

BGP

EVPN-VXLAN

Python

Ansible

Infrastructure as Code

CI/CD

Observability

Incident management

Tools

Cisco

Arista

Job description

I'm supporting a leading quantitative technology firm that's looking to appoint a Network Team Lead to take ownership of the performance, reliability and operational maturity of its network environment.

This is a hands-on technical leadership position for someone who can combine deep network engineering expertise with a strong focus on automation, observability and operational excellence.

The role

You’ll lead the day-to-day operation and continuous improvement of network infrastructure across datacentre, WAN and campus environments.

Alongside providing technical leadership to the network function, you’ll drive a more automated and proactive approach to network operations — reducing manual intervention, improving observability and ensuring the environment remains highly available, resilient and secure.

Key responsibilities

• Lead the operational performance, stability and availability of the network environment
• Provide technical leadership across network operations and incident response
• Lead the investigation and resolution of critical network incidents
• Drive automation using Python, Ansible and Infrastructure as Code
• Improve network monitoring, telemetry, alerting and observability
• Develop operational tooling, runbooks and incident response processes
• Work closely with Network Security and Infrastructure Engineering teams
• Support network architecture, upgrades, capacity planning and performance optimisation
• Identify recurring issues and drive long-term technical improvements

What we’re looking for

• Strong hands-on network engineering experience within enterprise or large-scale environments
• Experience across datacentre, WAN and campus networking
• Strong Cisco or Arista experience
• Excellent understanding of L2/L3 networking, BGP and EVPN-VXLAN
• Experience with network security infrastructure including firewalls, load balancers and proxies
• Experience with Python, Ansible or similar automation tooling
• Understanding of Infrastructure as Code and CI/CD
• Experience with network observability and monitoring
• Strong incident management and troubleshooting capability
• Previous experience leading engineers, projects or a technical function

What’s on offer

• Highly competitive salary + discretionary annual bonus

This is an excellent opportunity for a senior Network Engineer or existing Network Lead who wants to take ownership of a sophisticated network environment while helping shape the way network engineering is delivered through automation, observability and modern infrastructure practices.