3rd Line Security Specialist - 24x7 Shift

Reference: 2ntxcshrz23ubn3pss9o

We are seeking an experienced 3rd Line Security Specialist to join a 24x7 operational security team. This role is responsible for providing advanced technical support, incident response and security expertise across a complex technology environment. You will investigate and resolve escalated security events, identify root causes, and help maintain the resilience, availability and effectiveness of security controls. The position operates on a shift basis, including nights, weekends and public holidays, to provide continuous protection and support.

Key responsibilities include analysing alerts and events from SIEM, endpoint protection, network monitoring and vulnerability management platforms; leading the investigation, containment and remediation of complex incidents; and coordinating with infrastructure, cloud, applications and service management teams when required. You will contribute to threat hunting, malware analysis, digital forensics and post-incident reviews, while producing clear technical reports and maintaining accurate case documentation. The role also involves tuning detection rules, improving monitoring coverage, supporting vulnerability remediation, reviewing security configurations and assisting with the development of playbooks, procedures and operational standards. You may also mentor junior analysts and act as a senior escalation point during critical incidents.

Applicants should have substantial experience in a security operations, incident response or 3rd line cybersecurity role, together with strong knowledge of SIEM technologies, endpoint detection and response, firewalls, identity services, networking and cloud security. Experience with cyber threat intelligence, scripting or automation, vulnerability management and recognised security frameworks is desirable. Relevant industry certifications are advantageous. You will need excellent analytical and problem-solving skills, the ability to communicate technical issues clearly, and a calm, methodical approach when working under pressure. Flexibility to work a rotating 24x7 shift pattern is essential, as is a commitment to continuous learning and maintaining high standards of security and service.

COMPETITIVE SALARY
Added 03/09/2026
Reference: 2ntxcshrz23ubn3pss9o

3rd Line Security Specialist - 24x7 Shift

Derby, England, United Kingdom Permanent Security Consultant

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