Network Security Engineer

NineTech; Greater London; On-site; Full time

Job summary

A prestigious financial services client is seeking a Network & Security Engineer for a 3-month contract in Central London. This role requires expertise in multicast routing and BGP, with a focus on managing network infrastructure and security solutions. The position offers £500 per day and requires on-site work three days a week.

Qualifications

• Proven experience in multicast routing in high-throughput environments.
• Hands-on with Aruba and Arista switch platforms.

Responsibilities

• Deploy and manage network infrastructure across global offices.
• Operate Palo Alto firewalls and GlobalProtect VPNs.

Skills

multicast routing

BGP

low-latency networks

troubleshooting

Tools

Aruba

Arista

Palo Alto firewalls

GlobalProtect VPN

ZScaler ZIA/ZPA

VMware SD-WAN

Job description

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Base pay range

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Contract Network & Security Engineer – Financial Services – £500/Day Outside IR35 – On-Site (Central London)

3-Month Contract

A prestigious financial services client is looking for an experienced Network & Security Engineer for a 3-month initial contract, working 3 days a week on-site in Central London. The role is outside IR35 and offers £500 per day.

Key Responsibilities

• Deploy, manage, and support network infrastructure across global offices and data centres.
• Handle multicast routing for market data across complex VRF and VLAN environments.
• Configure and support Aruba and Arista switches (Access, Distribution, and Low-Latency Core).
• Manage BGP peering, filtering, and performance optimisation for trading environments.
• Operate Palo Alto firewalls, GlobalProtect VPNs, and ZScaler (ZIA/ZPA) security solutions.
• Support VMware SD-WAN (VeloCloud) for remote and branch sites.
• Monitor latency, throughput, and link health across key network paths.
• Contribute to automation and network documentation.

Required Skills & Experience

• Proven experience in multicast routing in high-throughput environments.
• Strong command of BGP, enterprise routing, and switching principles.
• Hands-on with Aruba and Arista switch platforms.
• Expertise in low-latency networks, ideally supporting trading or other real-time applications.
• Solid understanding of Palo Alto firewalls and GlobalProtect VPN.
• Working knowledge of ZScaler ZIA/ZPA.
• Experience with VMware SD-WAN (VeloCloud) or equivalent.
• Advanced troubleshooting skills across all layers of the OSI model.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Contract

Job function

• Job function

  Information Technology

• Industries

  Staffing and Recruiting and Information Services

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