Network Security Specialist

We’re hiring an experienced Network & Security Engineer to design, implement and operate the network and security estate that protects critical business services. You’ll provide technical leadership, drive secure networking design and deliver operational resilience across a global environment.

What you’ll deliver (outcomes & impact)

  • Lead design and implementation of secure networking capabilities aligned to Zero Trust and micro‐segmentation principles.
  • Own day‐to‐day operation and pro‐active maintenance of network and security hardware, applications and services.
  • Drive resilience and availability: troubleshoot incidents, respond to major incidents, and implement changes with minimal business disruption.
  • Influence architecture and automation decisions to reduce risk and operational overhead.
  • Maintain strong operational governance: runbooks, test plans, change documentation, and audit/control routines.
  • Provide technical leadership within an Agile team and contribute to continuous improvement.

Core technical requirements (must‐have)

  • Proven hands‐on experience with Palo Alto Firewalls and Panorama in a global environment. PCNSE, PCCSE or equivalent experience.
  • Cisco CCNP or equivalent experience; strong OSPF and BGP knowledge.
  • Azure networking experience (AZ‐700 or equivalent).
  • Experience implementing Zero Trust and micro‐segmentation.
  • Packet analysis skills (Wireshark or similar) and experience with DDoS mitigation.
  • Familiarity with monitoring tools such as LogicMonitor (or similar).
  • Experience with Cisco ISE / NAC solutions.
  • Working knowledge of connectivity technologies: DIA, MPLS, DWDM.
  • Experience with Cisco and Meraki wireless platforms.
  • Participation in an on‐call rota and incident response.

Desirable

  • Network automation experience.
  • Prior exposure to global multi‐site environments and large‐scale security programmes.
  • Strong documentation, communication and stakeholder engagement skills.

Job Details

Company
Marks Sattin
Location
City of London, London, United Kingdom
Posted