Senior Network Engineer

Ocean Red Partners Limited; Greater London; Hybrid; GBP 65,000 - GBP 85,000; Full time

Job summary

A financial technology firm is seeking a Senior Network Engineer to work on low-latency, production-grade network infrastructures. This role includes supporting live platforms, engaging with clients for onboarding, and designing network solutions. Candidates should have strong experience in network engineering, particularly with routing protocols, hands-on skills with Cisco/Arista, and confidence in managing firewalls and VPNs. The position offers a hybrid work model with competitive compensation and benefits.

Benefits

Strong base salary

Performance bonus

Full benefits

Qualifications

• Several years in network engineering or network support roles.
• Strong routing and switching fundamentals.
• Hands-on experience with Cisco and/or Arista environments.
• Confidence working with firewalls and VPNs.
• Experience supporting or building VXLAN EVPN architectures.

Responsibilities

• Supporting live platforms during trading hours.
• Designing, building, and upgrading network infrastructure end-to-end.
• Making controlled changes to routing, switching, firewalls, and VPNs.
• Dealing with vendors when escalation is needed.

Skills

Network engineering

Routing and switching fundamentals (BGP, OSPF, ACLs)

Experience with Cisco and/or Arista environments

Working with firewalls (Fortinet or similar)

Diagnosing issues with packet captures

Tools

Cisco

Arista

VMware

Job description

Senior Network Engineer

Overview

🏢 Company | Financial technology, market infrastructure, profitable and scaling

👤 Work | Senior Network Engineer

🎯 Impact | Keep live trading platforms fast, resilient, and trusted

📏 Team | Specialist infrastructure group inside a regulated environment

🌟 Focus | Low-latency networking, exchange-style infrastructure, client connectivity

📍 Location | London

💻 Hybrid | Office + home (with flexibility around on‑call and change windows)

💰 Offer | Strong base + bonus + full benefits (details shared confidentially)

The reason you might care

If you like networks that actually matter, this will land with you.

You’ll be working on live, latency‑sensitive platforms where uptime, routing decisions, and clean change execution have real‑world consequences. This isn’t internal IT. It’s production infrastructure used by external clients who expect things to work — every day, without excuses.

You’ll get:

• Ownership of real exchange‑style network infrastructure

• Exposure to client onboarding, upgrades, and complex change windows

• A mix of project work and hands‑on operational responsibility

• Enough scale to be interesting, without the politics of a mega‑bank

• A team that plans properly, documents properly, and trusts engineers to think

And yes — this is a grown‑up environment. People collaborate, challenge ideas, and get on with the work.

What you’ll actually be doing

You’ll sit at the heart of the network operation.

That means:

• Supporting live platforms during trading hours

• Working directly with clients during onboarding and technical upgrades

• Designing, building, and upgrading network infrastructure end‑to‑end

• Racking, configuring, testing, documenting — the full lifecycle

• Making controlled changes to routing, switching, firewalls, and VPNs

• Taking part in a sensible support rota (with planned out‑of‑hours work for major changes)

• Dealing with vendors when escalation is needed — not being blocked by them

You’ll report into a hands‑on infrastructure leader who understands networks, not a spreadsheet.

What you’ll need to bring

This will suit you if you already know your way around production networks and want more responsibility, not just tickets.

You’ll need:

• Several years in network engineering or network support roles

• Strong routing and switching fundamentals (BGP, OSPF, ACLs)

• Hands‑on experience with Cisco and/or Arista environments

• Confidence working with firewalls and VPNs (Fortinet or similar)

• Experience supporting or building VXLAN EVPN architectures

• Comfort troubleshooting with packet captures and real diagnostics

Useful extras (not deal‑breakers):

• Exposure to multicast (PIM, IGMP, MSDP)

• Low‑latency or trading‑style networks

• VMware, cloud platforms, or Linux admin

Most importantly: you stay calm when things matter, document what you touch, and think before you change.

How it works from here

📅 Process | Intro call → Technical discussions → Final interview → Offer

If this sounds like the kind of network environment you’ve been missing, apply and we’ll share full details in confidence — including the platform, team structure, and roadmap.

No speculation. No noise. Just a proper network engineering role.