Senior Network Engineer – EVPN/VXLAN, Automation & AI

Cantor Fitzgerald Ireland Ltd; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Cantor Fitzgerald Ireland Ltd. is seeking an experienced Network Engineer to design, implement, and evolve a global financial network across data centres, trading floors, and enterprise sites.

You will lead end‑to‑end projects, mentor junior engineers, and act as senior escalation for complex incidents. The role emphasizes EVPN/VXLAN on Arista, automation using Python/Ansible, and applying AI tools to operational problems, with a focus on high availability and low latency in a financial trading

Qualifications

• Cisco CCNP Routing & Switching certification.
• Bachelor’s degree in Computer Science, Engineering or related field.
• Wireless foundational certification.
• Experience supporting a high‑volume, high‑availability financial trading environment.
• Exposure to network‑as‑code, source‑controlled configurations, or CI/CD for networks.

Responsibilities

• Design and implement data centre and enterprise network solutions, including new installations, platform refresh and redesign, and site migrations.
• Deliver network projects end to end: design docs, build, test, cutover, and handover to operations.
• Turn up and support services to third parties, including CDN, extranet services, and VPNs.
• Lead routing and switching design across Juniper, Arista, and Cisco platforms (BGP, OSPF, EIGRP).
• Design, build, and support EVPN/VXLAN data centre fabrics on Arista platforms.
• Act as senior escalation for complex network incidents and drive permanent resolutions.
• Build network automation and tooling (Python, Ansible) and apply AI to monitoring and troubleshooting.
• Refine enterprise monitoring to keep pace with estate; maintain documentation.

Skills

Routing & Switching

EVPN/VXLAN

Automation (Python/Ansible)

Data centre networking

Wi-Fi networking

Palo Alto firewalls

F5 load balancers

Networking as code

Education

Bachelor’s degree in Computer Science or Engineering

Cisco CCNP Routing & Switching

Wireless foundational certification

Tools

Junos

Arista EOS

Cisco IOS

Git

Grafana

Splunk

Python

Ansible

CI/CD for network changes

Job description

Cantor Fitzgerald Ireland Ltd. is seeking an experienced Network Engineer to design, implement, and evolve a global financial network across data centres, trading floors, and enterprise sites.

You will lead end‑to‑end projects, mentor junior engineers, and act as senior escalation for complex incidents. The role emphasizes EVPN/VXLAN on Arista, automation using Python/Ansible, and applying AI tools to operational problems, with a focus on high availability and low latency in a financial trading