Network Engineer

Arcas Technology Ltd.

Posted 12 hours ago, valid for 22 days

London, Greater London EC1R 0WX

Full Time

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Arcas Technology is partnered with a global financial trading firm that specialises in derivatives contracts, including Futures and Options.

The role will focus on designing, operating, and troubleshooting a secure, high-performance global network supporting 24/5 trading activities. You will manage routing across data centers and offices, support trading and back-office network traffic, and operate key security platforms such as firewalls, VPNs, and ZTNA solutions.

Responsibilities:

Design, deploy, and support network infrastructure across global offices and data centers.
Manage and troubleshoot multicast routing for market data distribution across multiple VRFs and VLANs.
Administer Aruba and Arista switches including configuration, firmware upgrades, and performance tuning.
Maintain BGP peering and route filtering policies to support low-latency trading.
Configure and monitor Palo Alto firewalls, GlobalProtect VPN, and ZScaler security platforms.
Support VMware SD-WAN deployments and policy management for remote offices and trading hubs.
Monitor network health, latency, and throughput across critical links.
Assist in network automation and documentation using standard tools.
Provide 2nd line support for network/security incidents, with on-call rotation as part of 24/5 global coverage.

Key Skills:

Proven experience with multicast routing in a high-throughput environment.
Solid understanding of BGP and enterprise-level routing & switching.
Hands-on experience with Aruba (Access/Distribution Layer) and Arista (Core/Low Latency) switches.
Experience working with low-latency network tuning for trading or similarly performance-critical environments.
Strong knowledge of Palo Alto Networks firewalls, GlobalProtect, and associated security policies.
Familiarity with ZScaler ZIA/ZPA and internet egress security in a global enterprise.
Experience with VMware SD-WAN (VeloCloud) or other modern SD-WAN technologies.
Ability to troubleshoot and diagnose complex network issues at all OSI layers.

If you feel that you’re a good fit for this role then please forward your CV to Andy Dale at Arcas Technology.