Senior Network Security Engineer - Design, Deploy & Secure

Jane Street in London is seeking an experienced Network Engineer for the Network Security team to run, scale, and improve our security infrastructure through hands-on operations, design, and implementation. The role emphasizes advanced networking, security appliances, and cross‑firm collaboration to deploy secure workflows and enhance observability.

The ideal candidate has 7+ years’ experience, expertise in routing protocols (OSPF/BGP/PIM-SM), firewall architecture and configuration, PKI,

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