London Low-Latency Network Engineer – Finance IT

Ocean Red; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Ocean Red in London seeks an experienced Network & Security Engineer to maintain low-latency trading infrastructure across cloud and on-premises environments. You will monitor, troubleshoot and optimize live platforms, work with telecoms on circuits, and contribute to capacity planning while documenting procedures.

You will join a small team, handle incidents, and progressively take ownership of infrastructure projects, with a keen eye for reliability in financial markets.

Qualifications

• Four or more years in network and security support engineering, ideally in a financial-services or similarly business-critical environment.
• Hands-on experience with TCP/IP, routing, switching, firewalls, RSTP, OSPF and BGP
• Strong troubleshooting skills using Wireshark, tcpdump, syslog, network monitoring platforms and firewall traffic logs

Responsibilities

• Monitor and maintain network and security infrastructure, identifying faults before they become wider issues
• Investigate incidents using monitoring tools, logs and packet captures, then help drive root-cause analysis
• Support client connectivity, access requests and decommissioning
• Work with telecoms providers to resolve circuit, leased-line and connectivity issues
• Deliver and validate planned network and security changes
• Support live platforms during operational hours and contribute to capacity planning
• Maintain network diagrams, procedures and operational documentation
• Contribute to infrastructure projects, taking on greater ownership as you grow

Skills

Routing

Switching

Firewalls

OSPF

BGP

Packet analysis

Tools

Fortinet

Arista EOS

PTP

Multicast

AWS networking

Ansible

Python

IPsec VPNs

Job description

Ocean Red in London seeks an experienced Network & Security Engineer to maintain low-latency trading infrastructure across cloud and on-premises environments. You will monitor, troubleshoot and optimize live platforms, work with telecoms on circuits, and contribute to capacity planning while documenting procedures.

You will join a small team, handle incidents, and progressively take ownership of infrastructure projects, with a keen eye for reliability in financial markets.