Information Security

3rd Line Network & Security Specialist - 24x7 Shift

BT Group

Remote · Nationwide · United Kingdom

Overview

In this role you provide expert security and network support on complex issues within a secure, on-site environment. You will lead technical delivery for security incidents and projects, collaborating with BT and third-party engineers to meet tight SLAs. As a subject matter expert, you’ll guide design teams and act as the operational single point of contact for customer contracts. The role supports a multi-year transformation to modernise services and strengthen cyber capability, offering meaningful impact at scale.

Pay / Benefits
  • 10% on target annual bonus
  • Online private GP 24/7
  • Paid carers leave
  • Maternity, paternity, and adoption leave
  • Pension scheme – 5% from you and 10% from us
  • Holiday purchase scheme
Responsibilities
  • Act as SME across a wide range of security technologies and products
  • Detect, respond to, and resolve complex security incidents and changes
  • Provide 3rd line support for high-priority incidents within SLA
  • Serve as the technology SME for specialised products and services
  • Be the operational SPOC for design or customer contract teams
  • Deliver RCAs and contribute to PIRs when required
Key requirements
  • Operational experience across Network Engineering and Security Operations with strong stakeholder management
  • Hands-on experience with Cisco Firewalls, Checkpoint Firewalls/IPS, F5, Cisco WSA/ESA/ISE, Ivanti Pulse VPN, switches and routers
  • Certifications or relevant practical experience in the listed technologies
  • Ability to lead and coordinate major/complex security and network incidents with cross-team collaboration
  • Stakeholder management
  • On-site client communication and coordination
  • Leadership during incident scenarios
  • Cisco Firewalls
  • Checkpoint Firewalls/IPS
  • F5 Load Balancing

Reference: WJ-747_31205596 · Posted 01 Nov 2026, 12:14 PM

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