Network Engineer

Ocean Red; Greater London; On-site; GBP 65,000 - 95,000; Full time

Job summary

Ocean Red is recruiting two Network Engineers to join a small, expert team managing a low-latency trading network, cloud and on-prem infrastructure behind a London trading venue.

You will own client onboarding, troubleshoot with packet captures and logs, and support live markets during trading hours, with a shift-based rota and occasional weekend work.

Qualifications

• What you'll need includes hands-on OSPF and BGP, plus TCP/IP, spanning tree and firewall knowledge.
• Experience with firewall management and central logging or management platforms.
• Proficiency with packet captures, Wireshark, tcpdump and syslog analysis.
• Ability to work with telecoms providers on leased lines and connectivity issues.
• Experience in a financial environment is a plus.
• Strong communication and documentation habits.

Responsibilities

• Run daily operational checks across the network and security estate, and investigate faults and anomalies.
• Troubleshoot with logs, monitoring tools and packet captures to find root cause.
• Manage client onboarding, access requests and decommissioning.
• Work with telecoms and network providers on leased lines, circuits and connectivity issues.
• Implement planned network and security changes, with validation and post-change checks.
• Support live exchange platforms, take part in incident investigation and root-cause analysis, and keep documentation current.
• Monitor capacity and propose plans for growth.

Skills

OSPF/BGP routing

TCP/IP fundamentals

Firewall concepts

Wireshark analysis

Packet captures

Network automation (Ansible/Python)

VPN/IPsec configuration

Education

CCNP

ACE-P

Tools

Fortinet firewall cluster

AWS networking

SolarWinds

Job description

Two Network Engineers for a small, expert team running the low-latency trading network, cloud and on-prem infrastructure behind a London trading venue. You'll own client onboarding, troubleshoot with packet captures and logs, and keep live markets connected. A shift-based role for someone who finds root cause rather than guessing at it.

The work

Two hires into a small, expert network team. The estate spans a low-latency trading network, cloud environments and on-premises systems, and the work mixes hands-on engineering with project delivery. You'll handle client onboarding, support live exchange platforms during trading hours and help refine how the team works, taking on more project responsibility as you grow. The role runs on a shift rota between 06:30 and 18:30, with occasional weekend or bank holiday work and occasional visits to London data centres.

What you'll be doing

• Run daily operational checks across the network and security estate, and investigate faults and anomalies
• Troubleshoot with logs, monitoring tools and packet captures to find root cause
• Manage client onboarding, access requests and decommissioning
• Work with telecoms and network providers on leased lines, circuits and connectivity issues
• Implement planned network and security changes, with validation and post-change checks
• Support live exchange platforms, take part in incident investigation and root-cause analysis, and keep documentation current
• Monitor capacity and propose plans for growth

What you'll need

Useful extras: PTP, multicast with PIM and RPs, AWS networking, Arista EOS, and network automation with Ansible or Python.

• 4+ years in network and security support engineering, ideally in a financial environment
• CCNP, ACE-P or equivalent experience
• Hands-on OSPF and BGP, and a strong grasp of TCP/IP, spanning tree, RSTP, routing and firewalls
• Support and configuration of a firewall cluster under a central manager, Fortinet ideally
• Wireshark, tcpdump, syslog and firewall log analysis, plus SolarWinds or a similar monitoring platform
• IPsec site-to-site and remote VPN configuration and troubleshooting
• Experience working with telecoms providers and leased lines
• Clear, pragmatic communication and good documentation habits

What happens next

We start with a confidential conversation to walk through the network, the team and the shift pattern before anything moves forward.