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Senior Network Site Reliability Engineer

Senior Network Site Reliability Engineer

Hybrid

London, United kingdom

Senior

Freelance

04-02-2026

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Skills

Leadership Incident Response Splunk ServiceNow Monitoring Ansible Networking Linux Prometheus Grafana

Job Specifications

Senior Network Site Reliability Engineer:

For one of our globally leading tech clients we are urgently looking for an experienced Senior Network Site Reliability Engineer for a long contract based in London, UK

Its paying well and my client can interview asap!

Role Overview:

We are seeking a highly experienced Senior Network SRE. This role is critical to ensuring the reliability, scalability, and performance of large-scale, mission-critical network infrastructure. The engineer will lead incident response, troubleshoot complex network issues, and drive automation and observability initiatives.

Mandatory Requirements

Hands-on experience in network engineering & operations
Strong expertise in:
Routing & Switching
Firewalling
Wireless networks
Deep understanding of overlay / underlay networking
Strong Linux / Unix skills
Experience with automation & monitoring platforms
Ability to work independently, set technical direction, and mentor engineers

Core Technology & Tools:

Network & Automation Tools

NetBox / Nautobot
Prometheus / VictoriaMetrics
Salt

Networking Expertise (One is mandatory)

EVPN / Segment Routing
OR
Strong MPLS depth (acceptable alternative)

Key Responsibilities

Incident Leadership: Own and resolve high-severity network incidents and outages
Advanced Troubleshooting: Across routing, switching, firewalling, and wireless
Technical Leadership: Mentor engineers and drive operational excellence
24/7 Operations: Participate in shift-based on-call rotation
Multi-Vendor Environments:
Arista, Cisco, Cumulus, Spectrum Ethernet
InfiniBand
Palo Alto, Check Point
Mist, Aruba
A10, Netscaler, F5
Security & Segmentation:
Network segmentation & policy enforcement
VPNs: GlobalProtect, AnyConnect
Automation & Observability:
Grafana, BigPanda, ServiceNow, ITMP
Syslog, Splunk, Prometheus
Salt, Ansible
Innovation Projects:
Wireless design initiatives
AI / GPU cluster network deployments

If this is you, then please do not delay in applying!

About the Company

US3 Consulting is a European recruitment provider that specialises in offering rapid and cost-effective candidate sourcing to all facets of the tech industry Contact us at info@us3consulting.co.uk Know more