Network Engineer

Company: Cantor Fitzgerald
Apply for the Network Engineer
Location: London
Job Description:

Overview

In this role you will lead the design, deployment, and evolution of Cantor International Services’ global financial network, spanning data centres, trading floors, and enterprise sites. You will own end-to-end project delivery, third‑party service integrations, and act as the senior technical escalation point for complex network incidents while driving automation and AI-based improvements. You will work with cross-regional teams to deliver scalable, secure network fabric and elevated operational efficiency. This position offers a meaningful impact on global network reliability and innovation.

Responsibilities

  • Design and implement data-centre and enterprise network solutions, including new builds, platform refreshes, and site migrations
  • Deliver network projects end-to-end: design documentation, build, testing, cutover, and handover to operations
  • Turn up and support third-party services such as CDN, extranet, and VPN connections
  • Lead routing and switching design on Juniper, Arista, and Cisco platforms (BGP, OSPF, EIGRP, redistribution, filtering)
  • Design, build, and support EVPN/VXLAN fabrics on Arista EOS
  • Act as senior escalation for complex incidents, conduct root‑cause analysis, and implement permanent fixes
  • Develop network automation and tooling using Python, Ansible, and Git to eliminate manual processes
  • Enhance monitoring and alerting (Grafana, Splunk, ServiceNow) and apply AI tools for proactive troubleshooting
  • Maintain infrastructure hygiene through code upgrades, EOL hardware replacement, and regular network audits
  • Mentor junior engineers, ensure accurate documentation, and coordinate hand‑overs across global regions

Key requirements

  • Cisco CCNP Routing & Switching certification
  • JNCIP‑Junos certification
  • Wireless foundational certification (required)
  • Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent experience
  • Strong routing and switching design experience on Junos, Arista EOS, and Cisco IOS (BGP, OSPF, EIGRP)
  • Hands‑on EVPN/VXLAN design and implementation on Arista platforms
  • Practical experience with Palo Alto firewalls and F5 load balancers
  • Proficiency in scripting/automation (Python, Ansible) applied to network problems
  • Proven ability to manage high‑pressure incident escalations and drive root‑cause resolutions
  • Experience mentoring junior staff and producing clear technical documentation
  • effective communication
  • mentoring
  • problem-solving under pressure
  • Junos (Juniper)
  • Arista EOS
  • Cisco IOS

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Posted: October 22nd, 2026