Senior Network Engineer

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.