Network Engineer – Trading

Company: Quant Capital
Apply for the Network Engineer – Trading
Location: London
Job Description:

Overview

In this role you will support and optimize on-premise data centres and networks to ensure availability, security, and smooth operations at scale. You will work with leading devices from Arista, Fortinet, Cisco, Juniper and A10 to build high-performing, low-latency networks across regions. You’ll drive automation and standard configuration management to sustain resilient infrastructure for a fast-paced trading environment. The position sits in a forward-looking infrastructure team dedicated to excellence in trading networks, with a calm, collaborative culture and strong emphasis on impactful tech decisions. This is an exciting opportunity to shape critical network platforms in a fintech that

Pay / Benefits

  • excellent salary and benefits package
  • on-going training
  • structured career path

Responsibilities

  • Support on-prem data centres and networks
  • Ensure availability, security, automation, and ongoing operations of the network
  • Work with Arista, Fortinet, Cisco, Juniper and A10 devices
  • Assist in building high-performing, resilient, low-latency networks across multiple regions
  • Drive efficient deployment and standard configuration management through automation
  • Troubleshoot issues and handle incident escalations, with emphasis on production change management

Key requirements

  • Experience with low-latency networks using Arista switches, Fortinet firewalls, Cisco routing and switching, Juniper SRX, A10 Load Balancers, Cisco ASA Firewalls, FortiManager, FortiAnalyzer, Corvil
  • Coding and network automation experience (Python, Ansible, Jinja2)
  • Advanced routing knowledge: BGP, OSPF, EVPN, VRFs, VXLAN, route leaking and filtering, IPsec VPNs, NATs, IPv6, multicast
  • Knowledge of Rest APIs, Git, SSL certificates, DNS, LDAP, DHCP and Linux
  • Network certificates such as CCNA, CCNP or Fortinet NSE4/7 beneficial
  • Arista (low-latency)
  • Fortinet firewalls
  • Cisco routing and switching
  • Juniper SRX
  • A10 Load Balancers
  • Cisco ASA Firewalls

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Posted: September 27th, 2026