Security Engineer L3
We are seeking an experienced Security Engineer L3 to provide advanced technical expertise across a complex and evolving cyber security environment. You will act as a senior escalation point for security incidents, supporting the investigation, containment and remediation of threats that cannot be resolved by first- or second-line teams. The role will involve working closely with infrastructure, cloud, network, development and service management teams to strengthen security controls and maintain resilient, well-governed systems.
Your responsibilities will include monitoring and analysing security events, leading incident response activities, conducting root-cause analysis and developing clear recommendations to prevent recurrence. You will design, implement and maintain security solutions across areas such as endpoint protection, identity and access management, vulnerability management, network security, security information and event management, and cloud security. You will also contribute to threat modelling, security assessments, penetration testing remediation, audit activity and the continuous improvement of operational procedures. Where required, you will support the development of automation, playbooks, dashboards and technical documentation, as well as providing guidance and mentoring to less experienced engineers.
Applicants should have substantial experience in a senior security engineering or incident response position, with a strong understanding of cyber security principles, defensive technologies and enterprise infrastructure. You will be confident working with security monitoring platforms, endpoint detection and response tools, vulnerability scanners, firewalls, identity platforms and public cloud services. Practical knowledge of scripting or automation, such as Python, PowerShell or Bash, is desirable, alongside experience interpreting threat intelligence and recognised security frameworks. Relevant professional certifications would be advantageous. The successful candidate will demonstrate sound judgement, excellent analytical and communication skills, and the ability to manage competing priorities while remaining calm during high-impact incidents. A proactive approach to problem-solving and a commitment to continuous learning are essential.
Security Engineer L3
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