Senior Low-Latency Trading Infrastructure Engineer

Dex

Greater London

On-site

GBP 90,000 - 150,000

Full time

8 hours ago

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Job summary

Dex is partnering with a world-class trading infrastructure team in London to own the physical and virtual compute and networking estate powering live trading and settlement systems. You will configure bare-metal Linux servers, troubleshoot Cisco Nexus/Catalyst switches, and build Python automation for a microsecond-sensitive environment.

This role demands deep networking expertise and a strong automation mindset.

Qualifications

5+ years managing production Linux environments and enterprise network infrastructure.
Deep TCP/IP knowledge with routing, subnetting and latency analysis.
Hands-on with Cisco Nexus/Catalyst switches and data centre cabling.
Python for automation and standard Git workflows.

Responsibilities

Own and scale the physical and virtual network foundation across data centres to balance throughput and ultra-low latency.
Serve as senior escalation point for production network anomalies, OS bottlenecks and hardware faults.
Write Python automation to provision and configure switches, policies and server fleets.
Instrument hosts and links with Prometheus, Grafana, and SNMP to detect microbursts.
Plan zero-downtime maintenance and hardware upgrades across co-located sites.