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

Location: Hybrid in City of London, Greater London, England, United Kingdom

Salary: £700–£800 per day

Company

hirify.global is recruiting for a global financial markets firm supporting latency-sensitive trading infrastructure across on-premises and cloud environments.

What you will do

• Engineer and support customer connectivity across on-premises and cloud environments, including circuit provisioning, AWS networking, and VPNs.
• Configure and deploy production changes across routing, firewall, and cloud network infrastructure.
• Troubleshoot complex network environments involving BGP, OSPF, MPLS, multicast, and HSRP.
• Monitor global network infrastructure in real time and respond to production incidents.
• Lead escalations and advanced troubleshooting across network, cloud, and infrastructure domains.
• Build automation, monitoring, and observability tooling using Python scripting and API integrations, while contributing to packet analysis and root-cause investigations.

Requirements

• 5+ years of network engineering experience.
• Hands-on experience with Cisco, Arista, and Palo Alto technologies.
• Strong routing, switching, and firewall fundamentals, including BGP, OSPF, and multicast.
• Packet analysis experience with tcpdump, Wireshark, or tshark.
• Experience with Python scripting or API-driven automation.

Culture & Benefits

• Hybrid working arrangement.
• Initial 6-month contract with a significant pipeline of work in 2027.
• Direct ownership of production network infrastructure supporting critical trading systems.