Senior Network Engineer (Inside IR35, Cisco, Arista, Palo Alto)

A global financial markets firm needs a Senior Network Engineer to support latency-sensitive trading infrastructure across on-prem and cloud environments. The role covers customer connectivity, complex troubleshooting, and building the automation and observability tooling that keeps critical systems running. You'll work across on-prem and cloud, with real ownership over production network infrastructure.

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Responsibilities:
Engineer and support customer connectivity across on-prem and cloud, including circuit provisioning, AWS networking, and VPN
Configure and deploy production changes across routing, firewall, and cloud network infrastructure
Troubleshoot complex environments (BGP, OSPF, MPLS, multicast, HSRP)
Provide real-time monitoring and incident response for global network infrastructure
Lead escalations and advanced troubleshooting across network, cloud, and infrastructure domains
Build automation, monitoring, and observability tooling via scripting and API integrations (Python)
Perform deep packet analysis and contribute to root cause investigations
What you'll bring: xehkeey
5+ years' network engineering experience across Cisco, Arista, and Palo Alto
Strong fundamentals in routing, switching, and firewall technologies (BGP, OSPF, Multicast)
Packet analysis experience (tcpdump, Wireshark, tshark)
Scripting or API-driven automation experience (Python)
Initial 6-month contract, with a significant pipeline of work in 2027.