3rd Line Security Analyst – Hybrid – Reading Sentinel Defender XDR

3rd Line Security Analyst

Location: Reading Hybrid, three office days and two home days (Month 1 full time in the office)

Salary: GBP50,000 – GBP60,000

Role and responsibilities

• Senior technical authority in Security Operations, improving security engineering, detection and response while supporting the wider team.
• Lead serious incidents, forensic investigations and root cause analysis.
• Develop detections, automation and orchestration; conduct proactive threat hunting.
• Engineer Sentinel, Defender XDR, CrowdStrike Falcon, Entra ID, Intune and Darktrace.
• Support Microsoft 365, Azure, AWS, identity and endpoint security.
• Maintain documentation, support compliance and mentor colleagues.

Experience and qualifications

• Substantial SOC, cyber operations or security engineering experience.
• Hands–on Sentinel, Defender XDR and CrowdStrike expertise.
• Incident response, malware analysis, forensics and threat hunting.
• Advanced KQL; PowerShell and/or Python automation.
• Entra ID, Conditional Access, Intune and Microsoft 365 security.
• Cloud and networking knowledge; MITRE ATT&CK, NIST and SANS frameworks.
• CISSP desirable.

Benefits

• 25 days holiday, holiday trading, volunteer day, pension, life assurance, employee assistance, mentoring, eye care, flu vaccination and Costco eligibility.

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