Experienced Network Security Engineer

Europe, United Kingdom, London
Permanent
Job ID: 2544

Job Description


[Up to c. £175k Comp Package | Hybrid Working]


Role Overview

A leading global trading firm is looking for a Network Security Engineer to protect and develop the infrastructure supporting its international trading and technology operations. This hands-on individual contributor role combines network security operations, infrastructure projects, technical design and automation. You will take regional ownership in London while working closely with a globally distributed team across the US and Asia...


Key Responsibilities

  • Operate, secure and improve network infrastructure supporting business-critical trading and corporate systems
  • Balance day-to-day network security operations with longer-term engineering and infrastructure projects
  • Design and deliver network and security infrastructure for new business units, systems and technology initiatives
  • Implement and support firewalls, VPN platforms, SASE, IDS, IPS, NDR and network segmentation controls
  • Troubleshoot complex routing, switching, connectivity and security issues across hybrid infrastructure
  • Analyse packet captures and network traffic to investigate incidents and identify root causes
  • Automate repetitive operational and security workflows using Python or comparable scripting tools
  • Participate in a light global on-call rotation, including occasional evening or weekend support


What You’ll Bring…

  • Around 6-10 years of combined network engineering and network security experience, with meaningful hands-on responsibility across both areas
  • Strong knowledge of routing, switching, TCP, UDP, IP, the OSI model and Layer 1, 2 and 3 troubleshooting
  • Production experience with firewalls, client VPNs, SASE, IDS, IPS, NDR and network segmentation technologies
  • Ability to diagnose complex network behaviour through packet analysis and end-to-end troubleshooting
  • Scripting or programming capability with Python or a comparable language, ideally used to automate operational processes
  • Strong communication skills and the maturity to raise issues early when working with a remotely based manager
  • Comfort operating independently in a fast-moving environment with changing priorities and occasional ambiguity
  • [Preferred] CCNA, CCNP, PCNSE or equivalent knowledge, alongside experience in financial services, trading or high-availability technology


...

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