Senior Network Security Engineer - 3rd-Line Incident Lead

BT Group; Manchester; On-site; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Competitive salary

10% on target annual bonus

Online private GP 24/7 for you and 'im

Market-leading pension scheme

Holiday purchase scheme

Job summary

BT Group in Manchester is seeking a Senior Network Security Engineer to join a growing team. You will act as a senior technical expert, guiding complex security operations, leading critical incident responses and shaping security architecture across multi-vendor environments.

You will mentor peers, drive improvements, and help automate routine tasks while maintaining rigorous cyber and change governance. The role is based in Manchester with 24/7 shift patterns and a strong focus on resilience.

Qualifications

• Significant hands-on experience as a 3rd-line Network Security Engineer in large-scale or 24/7 environments.
• Proven experience leading complex P1/P2 incidents and high-risk changes in production.
• Mentoring engineers and contributing to automation and design improvements.

Responsibilities

• Provide 3rd-line leadership and SME expertise across Network Security Operations.
• Lead technical resolution of critical incidents ensuring service restoration.
• Oversee complex changes with risk assessment and peer review.
• Develop automation and tooling to improve efficiency and scalability.
• Create high-quality technical documentation and service maps.

Skills

3rd-line security expertise

Incident leadership

Technical leadership

Tools

Palo Alto

F5 BIG-IP

Netskope

Forescout NAC

Job description

BT Group in Manchester is seeking a Senior Network Security Engineer to join a growing team. You will act as a senior technical expert, guiding complex security operations, leading critical incident responses and shaping security architecture across multi-vendor environments.

You will mentor peers, drive improvements, and help automate routine tasks while maintaining rigorous cyber and change governance. The role is based in Manchester with 24/7 shift patterns and a strong focus on resilience.