Senior Cyber Security Engineer

DGH Recruitment Limited; Greater London; On-site; GBP 85,000 - 115,000; Full time

Job summary

DGH Recruitment Limited seeks a Senior Cyber Security Engineer / Specialist to own cybersecurity controls and security architecture within the IT landscape. You will lead incident response, identify vulnerabilities and coordinate remediation with Engineering and Operations.

The role requires five+ years in cyber security, strong Microsoft security expertise (Defender and Sentinel), and relevant certifications such as CISSP, CEH, or CCNA Security.

Qualifications

• 5 years experience in cyber security engineering or specialist capacity.
• Knowledge of best practices in modern security architectures and incident responses.
• Strong knowledge of Microsoft security environments, including Defender and Sentinel.
• Excellent problem-solving ability, including leading multi-disciplinary teams to diagnose and troubleshoot complex issues.
• Hold at least one security-related certification such as CISSP, CEH, or CCNA Security.

Responsibilities

• Own and continually develop cybersecurity controls and security architecture.
• Identify vulnerabilities in hardware and software to be remediated by Engineering and Operations teams.
• Understand current and emerging security threats.
• Assist and lead incident response investigations and mitigation.
• Participate in and lead varied IT infrastructure lifecycle and security projects where relevant.
• Create high-level designs, support solution costing, and review project proposals.
• Ensure proposed infrastructure architecture and design align with our policies.
• Evaluate project success after delivery, identifying best practices and lessons learned.
• Provide major problem and incident support where Operations teams need steering from a subject matter expert.
• Liaise with third-party suppliers on system issues.
• Ensure all members of 3rd level teams have relevant skills sharing, procedures, and documentation.

Skills

Cybersecurity

Security architectures

Incident response

Team leadership

CISSP

CEH

CCNA Security

Microsoft Defender

Microsoft Sentinel

Job description

Salary: £100,000 - 100,000 per year

Requirements

• 5 years experience of working within a cyber security engineering / specialist capacity.
• Knowledge of best practices in modern security architectures and incident responses.
• Strong knowledge of Microsoft security environments, including Defender and Sentinel.
• Excellent problem-solving ability, including leading multi-disciplinary teams to identify, research and coordinate resource to diagnose and troubleshoot complex issues.
• Hold at least one security-related certification such as CISSP, CEH, or CCNA Security.

Responsibilities

• Own and continually develop cybersecurity controls and security architecture.
• Identify vulnerabilities in hardware and software to be remediated by Engineering and Operations teams.
• Understand current and emerging security threats.
• Assist and lead incident response investigations and mitigation.
• Participate in and lead varied IT infrastructure lifecycle and security projects where relevant.
• Create high-level designs, support solution costing, and review project proposals.
• Ensure proposed infrastructure architecture and design align with our policies.
• Evaluate project success after delivery, identifying best practices and lessons learned.
• Provide major problem and incident support where Operations teams need steering from a subject matter expert.
• Liaise with third-party suppliers on system issues.
• Ensure all members of 3rd level teams have relevant skills sharing, procedures, and documentation.

Technologies

• Hardware
• Support
• Security

More

We are recruiting for a Senior Cyber Security Engineer / Specialist. The role reports into our Infrastructure Engineering Manager and focuses on cybersecurity controls, security architecture, project delivery, and 3rd line support. Our working policy requires 4 days per week in the office during probation and 3 days thereafter.

last updated 40 week of 2026